- published: 15 Jan 2018
- views: 1106776
-
remove the playlistMembrane Transport Protein
-
remove the playlistTransport Protein
-
remove the playlistMembrane Transport
- remove the playlistMembrane Transport Protein
- remove the playlistTransport Protein
- remove the playlistMembrane Transport
Membrane transport protein
A membrane transport protein (or simply transporter) is a membrane protein involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. These mechanisms of action are known as carrier-mediated transport.
Difference between protein channels and protein carriers
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Membrane_transport_protein
Transport protein
A transport protein (variously referred to as a transmembrane pump, transporter protein, escort protein, acid transport protein, cation transport protein, or anion transport protein) is a protein that serves the function of moving other materials within an organism. Transport proteins are vital to the growth and life of all living things. There are several different kinds of transport proteins.
Carrier proteins are proteins involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Carrier proteins are integral membrane proteins; that is, they exist within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion (i.e., passive transport) or active transport. These mechanisms of movement are known as carrier-mediated transport. Each carrier protein is designed to recognize only one substance or one group of very similar substances. Research has correlated defects in specific carrier proteins with specific diseases. A membrane transport protein (or simply transporter) is a membrane protein that acts as such a carrier.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Transport_protein
Membrane transport
In cellular biology, membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes, which are lipid bilayers that contain proteins embedded in them. The regulation of passage through the membrane is due to selective membrane permeability - a characteristic of biological membranes which allows them to separate substances of distinct chemical nature. In other words, they can be permeable to certain substances but not to others.
The movements of most solutes through the membrane are mediated by membrane transport proteins which are specialized to varying degrees in the transport of specific molecules. As the diversity and physiology of the distinct cells is highly related to their capacities to attract different external elements, it is postulated that there is a group of specific transport proteins for each cell type and for every specific physiological stage[1]. This differential expression is regulated through the differential transcription of the genes coding for these proteins and its translation, for instance, through genetic-molecular mechanisms, but also at the cell biology level: the production of these proteins can be activated by cellular signaling pathways, at the biochemical level, or even by being situated in cytoplasmic vesicles.
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Membrane_transport
Podcasts:
-
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport. Transcript/Notes (partial) Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy. Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis. Diffusion is the movement of a substance from where it has a high con...
published: 15 Jan 2018 -
In Da Club - Membranes & Transport: Crash Course Biology #5
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. "Concert" music used with permission from Chameleon Circuit. This video uses sounds from Freesound.org Table of Contents time codes: 1) Passive Transport - 1:17 2) Diffusion - 1:25 3) Osmosis - 2:12 4) Channel Proteins- 4:37 5) Active Transport - 4:58 6) ATP - 5:37 7) Transport Proteins - 6:19 8) Biolography - 6:37 9) Vesicular Transport - 9:02 10) Exocytosis - 9:21 11) Endocytosis - 9:50 12) Phagocytosis - 9:57 13) Pinocytosis - 10:29 14) Receptor-Mediated Endocytosis - 10:48 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook...
published: 27 Feb 2012 -
Cell membrane proteins | Cells | MCAT | Khan Academy
Learn about the different types of proteins that exist on the cell membrane. By William Tsai. Created by William Tsai. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-fluidity?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-overview-fluid-mosaic-model?utm_source=YT&utm_medium=Desc&utm_campaign=mcat MCAT on Khan Academy: Go ahead and practice some passage-based questions! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer program...
published: 17 Sep 2013 -
Membrane Transport Proteins
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4] Contents 1 Difference between channels and carriers 2 Active diffusion 3 Facilitated diffusion 4 Rever...
published: 03 Oct 2018 -
Membrane Transport Proteins
Animation contrasting the function of two different types of membrane transport proteins. Animated in Maya, composited in After Effects. Membrane transport is the process by which things can pass through the cell membrane. The first part of the animation shows a sodium ion (green) passing through an ion channel (purple). Ion channels are essentially passive tubes, which specific ions can pass through. Ions can move in either direction through an ion channel—whether ions go in or out of the cell is determined by their electrochemical gradient rather than anything about the ion channel. This animation features the ion channel NaK from Bacillus cereusion (PDB: 3E86), but the basic principle applies to all ion channels. The second part of the animation shows lactose (white) moving through l...
published: 29 May 2013 -
Cell Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇 Table of Contents: Intro 00:00 Importance of Cell Membrane for Homeostasis 0:41 Cell Membrane Structure 1:07 Simple Diffusion 1:45 What does it mean to "go with the concentration gradient?" 2:20 Facilitated Diffusion 2:38 Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36) Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis. The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The A...
published: 24 Jun 2016 -
In da club - membranes and transport | Crash Course biology | Khan Academy
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Created by Crash Course. View the next lesson: https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-106 Missed the previous lesson? https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-104
published: 23 Apr 2019 -
MEMBRANE PROTEINS - Types and Functions
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give difference kinds of membranes their unique properties. They help with both facilitated diffusion and active transport, connect cells together, participate in signal transduction, and act as markers for cell identification. Proteins carry out most of the specific functions of membranes, so the amount/types of proteins vary between different membranes. Membranes can be up to 75% protein by mass! Membrane proteins can be integral/intrinsic or peripheral/extrinsic. Integral membrane proteins are a permanent part of the membrane, while peripheral proteins are only transiently associated with either the membrane or integral proteins, with hy...
published: 08 Sep 2019
developed with YouTube
10:50
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
- Order: Reorder
- Duration: 10:50
- Uploaded Date: 15 Jan 2018
- views: 1106776
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrie...
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport.
Transcript/Notes (partial)
Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy.
Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis.
Diffusion is the movement of a substance from where it has a high concentration to where it has a low concentration, or the tendency of a substance to spread out evenly over a given space.
Simple diffusion occurs with solutes that are small and non polar. By being non polar they can move in between the phosphoipid molecules that form the plasma membrane because the interior region of the membrane is non polar. Some of the materials that move by simple diffusion include the gases O2, CO2, and small fatty acids. So, if there is a higher concentration of oxygen O2 molecules outside of a cell, they can move down the concentration gradient, across the membrane without assistance, and into the cell as long as the concentration gradient exists.
The second type of diffusion is facilitated diffusion. This applies to solutes that are small and either charged or polar. Because these solutes are polar, the non polar phospholipid bilayer blocks them from passing through the membrane and into or out of the cell by simple diffusion. However, they can pass into and out of the cell with the assistance of plasma membrane proteins through a process called facilitated diffusion. There are two types of facilitated diffusion, channel mediated diffusion and carrier mediated diffusion. The difference between the two is the type of transport protein used to move the substance across the membrane.
Channel mediated diffusion is when a ion, which is a charged particle where its total number of electrons does not equal its total number of protons giving it a positive or negative charge, moves across the membrane through a water filled protein channel. Each protein channel is typically specific for one type of ion, and there are two types of channels, a leak channel, which is continuously open, and a gated channel, which only opens due to a stimulus, and only stays open for a fraction of a second.
Carrier mediated diffusion involves the movement of polar molecules such as simple sugars or simple carbohydrates and amino acids across the membrane. This is accomplished by a carrier protein, which actually changes shape in the process. For instance glucose binds to a carrier protein, which changes shape and moves the glucose molecule to the other side of the membrane.
Now for osmosis. Osmosis is the passive movement of water through a selectively permeable membrane. This occurs when there is a difference in concentration of water on either side of the membrane. This can happen in one of two ways, water can slip between the phospholipid molecules that make up the plasma membrane, or through integral protein water channels that are called aquaporins.
Now lets look at active processes. As stated earlier, active processes require the use of cellular energy for membrane transport. There are two types of active processes, active transport and vesicular transport. Active transport is the movement of a solute against its concentration gradient, or going from an area of low concentration to a place of higher concentration. Vesicular transport is the transport of large substances across the plasma membrane by a vesicle, which is a membrane bound sac filled with materials.
Active transport has two types, primary active transport and secondary active transport.
In primary active transport cellular protein pumps called ion pumps move ions across the membrane, against their concentration gradient.
Timestamps
0:00 The structure of cell membranes
0:42 The 2 main membrane transport processes (passive and active)
1:12 What is diffusion?
2:11 Simple diffusion
3:05 Facilitated diffusion
3:44 Channel mediated diffusion
4:29 Carrier mediated diffusion
4:51 What is osmosis?
5:49 Active processes
6:01 Active transport
6:12 Vesicular transport
6:28 Primary active transport
7:27 Secondary active transport
8:37 The 2 types of vesicular transport
8:53 Exocytosis
9:23 Endocytosis
https://wn.com/Cell_Membrane_Transport_Transport_Across_A_Membrane_How_Do_Things_Move_Across_A_Cell_Membrane
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport.
Transcript/Notes (partial)
Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy.
Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis.
Diffusion is the movement of a substance from where it has a high concentration to where it has a low concentration, or the tendency of a substance to spread out evenly over a given space.
Simple diffusion occurs with solutes that are small and non polar. By being non polar they can move in between the phosphoipid molecules that form the plasma membrane because the interior region of the membrane is non polar. Some of the materials that move by simple diffusion include the gases O2, CO2, and small fatty acids. So, if there is a higher concentration of oxygen O2 molecules outside of a cell, they can move down the concentration gradient, across the membrane without assistance, and into the cell as long as the concentration gradient exists.
The second type of diffusion is facilitated diffusion. This applies to solutes that are small and either charged or polar. Because these solutes are polar, the non polar phospholipid bilayer blocks them from passing through the membrane and into or out of the cell by simple diffusion. However, they can pass into and out of the cell with the assistance of plasma membrane proteins through a process called facilitated diffusion. There are two types of facilitated diffusion, channel mediated diffusion and carrier mediated diffusion. The difference between the two is the type of transport protein used to move the substance across the membrane.
Channel mediated diffusion is when a ion, which is a charged particle where its total number of electrons does not equal its total number of protons giving it a positive or negative charge, moves across the membrane through a water filled protein channel. Each protein channel is typically specific for one type of ion, and there are two types of channels, a leak channel, which is continuously open, and a gated channel, which only opens due to a stimulus, and only stays open for a fraction of a second.
Carrier mediated diffusion involves the movement of polar molecules such as simple sugars or simple carbohydrates and amino acids across the membrane. This is accomplished by a carrier protein, which actually changes shape in the process. For instance glucose binds to a carrier protein, which changes shape and moves the glucose molecule to the other side of the membrane.
Now for osmosis. Osmosis is the passive movement of water through a selectively permeable membrane. This occurs when there is a difference in concentration of water on either side of the membrane. This can happen in one of two ways, water can slip between the phospholipid molecules that make up the plasma membrane, or through integral protein water channels that are called aquaporins.
Now lets look at active processes. As stated earlier, active processes require the use of cellular energy for membrane transport. There are two types of active processes, active transport and vesicular transport. Active transport is the movement of a solute against its concentration gradient, or going from an area of low concentration to a place of higher concentration. Vesicular transport is the transport of large substances across the plasma membrane by a vesicle, which is a membrane bound sac filled with materials.
Active transport has two types, primary active transport and secondary active transport.
In primary active transport cellular protein pumps called ion pumps move ions across the membrane, against their concentration gradient.
Timestamps
0:00 The structure of cell membranes
0:42 The 2 main membrane transport processes (passive and active)
1:12 What is diffusion?
2:11 Simple diffusion
3:05 Facilitated diffusion
3:44 Channel mediated diffusion
4:29 Carrier mediated diffusion
4:51 What is osmosis?
5:49 Active processes
6:01 Active transport
6:12 Vesicular transport
6:28 Primary active transport
7:27 Secondary active transport
8:37 The 2 types of vesicular transport
8:53 Exocytosis
9:23 Endocytosis
11:45
In Da Club - Membranes & Transport: Crash Course Biology #5
- Order: Reorder
- Duration: 11:45
- Uploaded Date: 27 Feb 2012
- views: 5870981
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission...
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
https://wn.com/In_Da_Club_Membranes_Transport_Crash_Course_Biology_5
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
- published: 27 Feb 2012
- views: 5870981
8:11
Cell membrane proteins | Cells | MCAT | Khan Academy
- Order: Reorder
- Duration: 8:11
- Uploaded Date: 17 Sep 2013
- views: 606927
Learn about the different types of proteins that exist on the cell membrane. By William Tsai. Created by William Tsai.
Watch the next lesson: https://www.khana...
Learn about the different types of proteins that exist on the cell membrane. By William Tsai. Created by William Tsai.
Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-fluidity?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-overview-fluid-mosaic-model?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
MCAT on Khan Academy: Go ahead and practice some passage-based questions!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1
Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
https://wn.com/Cell_Membrane_Proteins_|_Cells_|_Mcat_|_Khan_Academy
Learn about the different types of proteins that exist on the cell membrane. By William Tsai. Created by William Tsai.
Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-fluidity?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-overview-fluid-mosaic-model?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
MCAT on Khan Academy: Go ahead and practice some passage-based questions!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1
Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 17 Sep 2013
- views: 606927
0:51
Membrane Transport Proteins
- Order: Reorder
- Duration: 0:51
- Uploaded Date: 03 Oct 2018
- views: 10583
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as anot...
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4]
Contents
1 Difference between channels and carriers
2 Active diffusion
3 Facilitated diffusion
4 Reverse diffusion
5 Types
5.1 1: Channels/pores
5.2 2: Electrochemical potential-driven transporters
5.3 3: Primary active transporters
5.4 4: Group translocators
5.5 5: Electron carriers
6 Examples
7 Pathology
8 See also
9 References
10 External links
Difference between channels and carriers
A carrier is not open simultaneously to both the extracellular and intracellular environments. Either its inner gate is open, or outer gate is open. In contrast, a channel can be open to both environments at the same time, allowing the molecules to diffuse without interruption. Carriers have binding sites, but pores and channels do not.[5][6][7] When a channel is opened, millions of ions can pass through the membrane per second, but only 100 to 1000 molecules typically pass through a carrier molecule in the same time.[8] Each carrier protein is designed to recognize only one substance or one group of very similar substances. Research has correlated defects in specific carrier proteins with specific diseases.[9]
Active diffusion
Main article: Active transport
The action of the sodium-potassium pump is an example of primary active transport. The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell.
Active transport is the movement of a substance across a membrane against its concentration gradient. This is usually to accumulate high concentrations of molecules that a cell needs, such as glucose or amino acids. If the process uses chemical energy, such as adenosine triphosphate (ATP), it is called primary active transport. Secondary active transport involves the use of an electrochemical gradient, and does not use energy produced in the cell.[10] Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.[11] A carrier protein is required to move particles from areas of low concentration to areas of high concentration. These carrier proteins have receptors that bind to a specific molecule (substrate) needing transport. The molecule or ion to be transported (the substrate) must first bind at a binding site at the carrier molecule, with a certain binding affinity. Following binding, and while the binding site is facing the same way, the carrier will capture or occlude (take in and retain) the substrate within its molecular structure and cause an internal translocation so that the opening in the protein now faces the other side of the plasma membrane.[12] The carrier protein substrate is released at that site, according to its binding affinity there.
https://wn.com/Membrane_Transport_Proteins
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4]
Contents
1 Difference between channels and carriers
2 Active diffusion
3 Facilitated diffusion
4 Reverse diffusion
5 Types
5.1 1: Channels/pores
5.2 2: Electrochemical potential-driven transporters
5.3 3: Primary active transporters
5.4 4: Group translocators
5.5 5: Electron carriers
6 Examples
7 Pathology
8 See also
9 References
10 External links
Difference between channels and carriers
A carrier is not open simultaneously to both the extracellular and intracellular environments. Either its inner gate is open, or outer gate is open. In contrast, a channel can be open to both environments at the same time, allowing the molecules to diffuse without interruption. Carriers have binding sites, but pores and channels do not.[5][6][7] When a channel is opened, millions of ions can pass through the membrane per second, but only 100 to 1000 molecules typically pass through a carrier molecule in the same time.[8] Each carrier protein is designed to recognize only one substance or one group of very similar substances. Research has correlated defects in specific carrier proteins with specific diseases.[9]
Active diffusion
Main article: Active transport
The action of the sodium-potassium pump is an example of primary active transport. The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell.
Active transport is the movement of a substance across a membrane against its concentration gradient. This is usually to accumulate high concentrations of molecules that a cell needs, such as glucose or amino acids. If the process uses chemical energy, such as adenosine triphosphate (ATP), it is called primary active transport. Secondary active transport involves the use of an electrochemical gradient, and does not use energy produced in the cell.[10] Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.[11] A carrier protein is required to move particles from areas of low concentration to areas of high concentration. These carrier proteins have receptors that bind to a specific molecule (substrate) needing transport. The molecule or ion to be transported (the substrate) must first bind at a binding site at the carrier molecule, with a certain binding affinity. Following binding, and while the binding site is facing the same way, the carrier will capture or occlude (take in and retain) the substrate within its molecular structure and cause an internal translocation so that the opening in the protein now faces the other side of the plasma membrane.[12] The carrier protein substrate is released at that site, according to its binding affinity there.
- published: 03 Oct 2018
- views: 10583
1:07
Membrane Transport Proteins
- Order: Reorder
- Duration: 1:07
- Uploaded Date: 29 May 2013
- views: 35136
Animation contrasting the function of two different types of membrane transport proteins. Animated in Maya, composited in After Effects.
Membrane transport is ...
Animation contrasting the function of two different types of membrane transport proteins. Animated in Maya, composited in After Effects.
Membrane transport is the process by which things can pass through the cell membrane.
The first part of the animation shows a sodium ion (green) passing through an ion channel (purple). Ion channels are essentially passive tubes, which specific ions can pass through. Ions can move in either direction through an ion channel—whether ions go in or out of the cell is determined by their electrochemical gradient rather than anything about the ion channel. This animation features the ion channel NaK from Bacillus cereusion (PDB: 3E86), but the basic principle applies to all ion channels.
The second part of the animation shows lactose (white) moving through lactose permease (LacY, shown in blue), with the assistance of a proton (red). LacY is an example of secondary active transport, meaning that unlike an ion channel, LacY can transport lactose against its concentration gradient—for example, accumulating a higher concentration of lactose inside of the cell than outside of it. When both a lactose and a proton bind with LacY, the LacY changes configuration to allow both the lactose and the proton to enter the cell. This animation features LacY from Escherichia coli (PDB: 2V8N), but the basic principle applies to all symporters.
The PDB file for the NaK channel can be found here:
http://www.rcsb.org/pdb/explore.do?structureId=3E86
The PDB file for the LacY can be found here:
http://www.rcsb.org/pdb/explore.do?structureId=2v8n
https://wn.com/Membrane_Transport_Proteins
Animation contrasting the function of two different types of membrane transport proteins. Animated in Maya, composited in After Effects.
Membrane transport is the process by which things can pass through the cell membrane.
The first part of the animation shows a sodium ion (green) passing through an ion channel (purple). Ion channels are essentially passive tubes, which specific ions can pass through. Ions can move in either direction through an ion channel—whether ions go in or out of the cell is determined by their electrochemical gradient rather than anything about the ion channel. This animation features the ion channel NaK from Bacillus cereusion (PDB: 3E86), but the basic principle applies to all ion channels.
The second part of the animation shows lactose (white) moving through lactose permease (LacY, shown in blue), with the assistance of a proton (red). LacY is an example of secondary active transport, meaning that unlike an ion channel, LacY can transport lactose against its concentration gradient—for example, accumulating a higher concentration of lactose inside of the cell than outside of it. When both a lactose and a proton bind with LacY, the LacY changes configuration to allow both the lactose and the proton to enter the cell. This animation features LacY from Escherichia coli (PDB: 2V8N), but the basic principle applies to all symporters.
The PDB file for the NaK channel can be found here:
http://www.rcsb.org/pdb/explore.do?structureId=3E86
The PDB file for the LacY can be found here:
http://www.rcsb.org/pdb/explore.do?structureId=2v8n
- published: 29 May 2013
- views: 35136
7:50
Cell Transport
- Order: Reorder
- Duration: 7:50
- Uploaded Date: 24 Jun 2016
- views: 6236903
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand...
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
https://wn.com/Cell_Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
- published: 24 Jun 2016
- views: 6236903
11:19
In da club - membranes and transport | Crash Course biology | Khan Academy
- Order: Reorder
- Duration: 11:19
- Uploaded Date: 23 Apr 2019
- views: 102152
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Created by Crash Course.
View the ne...
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Created by Crash Course.
View the next lesson: https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-106
Missed the previous lesson? https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-104
https://wn.com/In_Da_Club_Membranes_And_Transport_|_Crash_Course_Biology_|_Khan_Academy
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Created by Crash Course.
View the next lesson: https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-106
Missed the previous lesson? https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-104
- published: 23 Apr 2019
- views: 102152
5:27
MEMBRANE PROTEINS - Types and Functions
- Order: Reorder
- Duration: 5:27
- Uploaded Date: 08 Sep 2019
- views: 317103
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give dif...
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give difference kinds of membranes their unique properties. They help with both facilitated diffusion and active transport, connect cells together, participate in signal transduction, and act as markers for cell identification. Proteins carry out most of the specific functions of membranes, so the amount/types of proteins vary between different membranes. Membranes can be up to 75% protein by mass!
Membrane proteins can be integral/intrinsic or peripheral/extrinsic. Integral membrane proteins are a permanent part of the membrane, while peripheral proteins are only transiently associated with either the membrane or integral proteins, with hydrophobic, electrostatic, or other non-covalent interactions.
There are several different kinds of integral proteins. Integral monotopic proteins are attached to only one of the two leaflets of phospholipids making up the membrane and don’t span across. There are also transmembrane proteins and lipid-anchored proteins. Transmembrane proteins are those that span the lipid bilayer, and can be bitopic, spanning across the membrane once, or polytopic, spanning across it more than once. Lipid-anchored proteins are those which are covalently attached to lipids embedded in the lipid bilayer. For example, GPI, or glycosylphosphatidylinositol, is a glycolipid that gets attached to a protein’s C-terminus during post-translational modification. It acts as an anchor for proteins to the outer leaflet of the plasma membrane. Both integral and peripheral proteins can be post-translationally modified (e.g. fatty acids, diacylglycerol, prenyl chains, or GPI).
Recall that cellular membranes are made up of a phospholipid bilayer, which consists of two leaflets of phospholipids. These phospholipids have polar heads which are hydrophilic, or water-loving, and non-polar fatty acyl tails that are hydrophobic, or water-hating. Polar substances like to interact with other polar substances and non-polar substances hang out with other non-polar substances. This really attests to the power of hydrogen bonding. Water molecules want to interact so badly that anything non-polar getting in the way of their hydrogen bonding results in decreased entropy. The result is what’s called the hydrophobic effect. Hence, phospholipids in water will spontaneously form lipid bilayers – minimizes contact between polar and nonpolar molecules, maximizes hydrogen bonding, and maximizes entropy.
This is also why transmembrane proteins are amphipathic – which means that they have regions which are hydrophilic and regions that are hydrophobic. The hydrophilic regions are exposed to water on either side of the membrane, while the hydrophobic bits are happily interacting with the hydrophobic tails of lipid molecules in the interior of the bilayer. As a result, transmembrane proteins are stuck permanently into the cell membrane and are very hard to isolate. To get them out, you need to add a detergent, which is amphipathic and will disrupt the lipid bilayer.
There are two basic types of transmembrane proteins: α-helical proteins, and β-barrel proteins. Note that while helix bundle proteins are found in all types of biological membranes, beta-barrel proteins are only found in the outer membranes of gram-negative bacteria, mitochondria, and chloroplasts – evidence for the endosymbiotic theory.
Transmembrane protein structure can be predicted using a hydropathy plot - hydrophobicity index on Y axis, amino acid number on X axis. The amino acids making up a protein are localized according to polarity within its final structure in such a way that the polar amino acids face the outside aqueous solutions and the nonpolar amino acids are adjacent to the lipid bilayer.
Transmembrane proteins can be classified by topology - based on the position of N- and C-termini, as well as start-transfer and stop-transfer sequences. Type I is a single transmembrane pass with the N-terminus on the extracellular side of the membrane. Type 2 is also a single transmembrane pass but the N-terminus is on the cytosolic side of the membrane.
Often, transmembrane proteins function as gateways, allowing specific substances to pass across the membrane. They can undergo conformational changes as they do this. They might participate in facilitated or active transport. Facilitated transport is spontaneous passive transport of substa nces via transmembrane proteins. Active transport requires energy and may be necessary, for instance, if a substance is being carried across the membrane against its chemical or electrical gradient.
In animal cells, most transmembrane proteins are glycosylated. These sugar residues are always present on the noncytosolic leaflet of the membrane. As a result, the cell surface is covered in carbohydrates, which form what’s called the “cell coat”.
https://wn.com/Membrane_Proteins_Types_And_Functions
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give difference kinds of membranes their unique properties. They help with both facilitated diffusion and active transport, connect cells together, participate in signal transduction, and act as markers for cell identification. Proteins carry out most of the specific functions of membranes, so the amount/types of proteins vary between different membranes. Membranes can be up to 75% protein by mass!
Membrane proteins can be integral/intrinsic or peripheral/extrinsic. Integral membrane proteins are a permanent part of the membrane, while peripheral proteins are only transiently associated with either the membrane or integral proteins, with hydrophobic, electrostatic, or other non-covalent interactions.
There are several different kinds of integral proteins. Integral monotopic proteins are attached to only one of the two leaflets of phospholipids making up the membrane and don’t span across. There are also transmembrane proteins and lipid-anchored proteins. Transmembrane proteins are those that span the lipid bilayer, and can be bitopic, spanning across the membrane once, or polytopic, spanning across it more than once. Lipid-anchored proteins are those which are covalently attached to lipids embedded in the lipid bilayer. For example, GPI, or glycosylphosphatidylinositol, is a glycolipid that gets attached to a protein’s C-terminus during post-translational modification. It acts as an anchor for proteins to the outer leaflet of the plasma membrane. Both integral and peripheral proteins can be post-translationally modified (e.g. fatty acids, diacylglycerol, prenyl chains, or GPI).
Recall that cellular membranes are made up of a phospholipid bilayer, which consists of two leaflets of phospholipids. These phospholipids have polar heads which are hydrophilic, or water-loving, and non-polar fatty acyl tails that are hydrophobic, or water-hating. Polar substances like to interact with other polar substances and non-polar substances hang out with other non-polar substances. This really attests to the power of hydrogen bonding. Water molecules want to interact so badly that anything non-polar getting in the way of their hydrogen bonding results in decreased entropy. The result is what’s called the hydrophobic effect. Hence, phospholipids in water will spontaneously form lipid bilayers – minimizes contact between polar and nonpolar molecules, maximizes hydrogen bonding, and maximizes entropy.
This is also why transmembrane proteins are amphipathic – which means that they have regions which are hydrophilic and regions that are hydrophobic. The hydrophilic regions are exposed to water on either side of the membrane, while the hydrophobic bits are happily interacting with the hydrophobic tails of lipid molecules in the interior of the bilayer. As a result, transmembrane proteins are stuck permanently into the cell membrane and are very hard to isolate. To get them out, you need to add a detergent, which is amphipathic and will disrupt the lipid bilayer.
There are two basic types of transmembrane proteins: α-helical proteins, and β-barrel proteins. Note that while helix bundle proteins are found in all types of biological membranes, beta-barrel proteins are only found in the outer membranes of gram-negative bacteria, mitochondria, and chloroplasts – evidence for the endosymbiotic theory.
Transmembrane protein structure can be predicted using a hydropathy plot - hydrophobicity index on Y axis, amino acid number on X axis. The amino acids making up a protein are localized according to polarity within its final structure in such a way that the polar amino acids face the outside aqueous solutions and the nonpolar amino acids are adjacent to the lipid bilayer.
Transmembrane proteins can be classified by topology - based on the position of N- and C-termini, as well as start-transfer and stop-transfer sequences. Type I is a single transmembrane pass with the N-terminus on the extracellular side of the membrane. Type 2 is also a single transmembrane pass but the N-terminus is on the cytosolic side of the membrane.
Often, transmembrane proteins function as gateways, allowing specific substances to pass across the membrane. They can undergo conformational changes as they do this. They might participate in facilitated or active transport. Facilitated transport is spontaneous passive transport of substa nces via transmembrane proteins. Active transport requires energy and may be necessary, for instance, if a substance is being carried across the membrane against its chemical or electrical gradient.
In animal cells, most transmembrane proteins are glycosylated. These sugar residues are always present on the noncytosolic leaflet of the membrane. As a result, the cell surface is covered in carbohydrates, which form what’s called the “cell coat”.
- published: 08 Sep 2019
- views: 317103
-
Transport Proteins: Pumps, Channels, Carriers
📝Find notes here: https://www.nonstopneuron.com/post/cell-membrane-transport-proteins Explore our entire animation video library at: https://www.nonstopneuron.com/ Video Summary: Transport proteins create a passage for lipid insoluble and larger molecules to cross the biological membrane. They can be pumps, channels or carriers. Pumps use energy from ATP to drive the primary active transport of a substance against its electrochemical gradient. Channels provide continuous passage for passive diffusion down the electrochemical gradient. Diffusion through channels is faster as multiple ions can pass through the channel during each opening. Pores are always open and gated channels switch between open and closed states. Carriers do not provide continuous passage. Movement through them is relat...
published: 01 Aug 2021 -
Kinesin protein walking on microtubule
Kinesin protein walking on a microtubule in a cell
published: 17 Aug 2012 -
Cell Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇 Table of Contents: Intro 00:00 Importance of Cell Membrane for Homeostasis 0:41 Cell Membrane Structure 1:07 Simple Diffusion 1:45 What does it mean to "go with the concentration gradient?" 2:20 Facilitated Diffusion 2:38 Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36) Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis. The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The A...
published: 24 Jun 2016 -
Membrane Transport Proteins
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4] Contents 1 Difference between channels and carriers 2 Active diffusion 3 Facilitated diffusion 4 Rever...
published: 03 Oct 2018 -
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
Official Ninja Nerd Website: https://ninjanerd.org Ninja Nerds! In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below! Outline (Contributed by Community Member Owen Dane Rosco): 00:00 - Intro and Overview 00:31 - Simple Diffusion 10:37 - Facilitated Diffusion 26:46 - Primary Active Transport 39:57 - Secondary Active Transport 57:09 - Vesicular Transport 57:42 - Pinocytosis 1:01:15 - Phagocytosis 1:07:44 - Receptor-Mediated Endocytosis 1:15:29 - Exocytosis 1:22:47 - Wrap-up J...
published: 22 Mar 2021 -
In Da Club - Membranes & Transport: Crash Course Biology #5
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. "Concert" music used with permission from Chameleon Circuit. This video uses sounds from Freesound.org Table of Contents time codes: 1) Passive Transport - 1:17 2) Diffusion - 1:25 3) Osmosis - 2:12 4) Channel Proteins- 4:37 5) Active Transport - 4:58 6) ATP - 5:37 7) Transport Proteins - 6:19 8) Biolography - 6:37 9) Vesicular Transport - 9:02 10) Exocytosis - 9:21 11) Endocytosis - 9:50 12) Phagocytosis - 9:57 13) Pinocytosis - 10:29 14) Receptor-Mediated Endocytosis - 10:48 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook...
published: 27 Feb 2012 -
A Day in the Life of a Motor Protein
The primary aim of the Hoogenraad research lab at the University of Utrecht, the Netherlands, is to understand how intracellular protein transport underlies the development and function of nerve cells. During this 5 min movie we follow John, a motor protein, who has to transport his package to the right destination in the nerve cell, illustrating the relevance and mechanisms of proper intracellular transport in the nervous system. http://cellbiology.science.uu.nl http://NCUtrecht.nl http://redrumbureau.nl Permission to use this video is not required. When you use our materials in print, on the Web or in a video or audio format, we simply request that you credit the "Hoogenraad lab at the Utrecht University" and refer to our website at http://cellbiology.science.uu.nl
published: 19 Oct 2013 -
Kinesin Motor Protein 3D Animation (with Labels)
3D Medical Animation by John Liebler – Kinesin Motor Protein “walking” along a microtubule filament, transporting molecular cargo such as neurotransmitters from one part of the cell to another. (Posted on Facebook) Art of the Cell: Medical & Scientific 3D Animation & Illustration @WaimuWaimu Check out his channel, website, and social media Also check out my biology playlist: https://youtube.com/playlist?list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE The video depicts a kinesin motor protein pulling a vesicle full of cargo, such as proteins, across a microtubule filament. Eukaryotic cells contain many membrane-bound organelles, such as the Golgi apparatus, which the vesicles recognize with their membrane proteins and fuse into the target organelle's membrane. How kinesin moves: https://youtu...
published: 16 Feb 2023 -
Brahmastra series - CSIR NET Unit 1 Q&A Discussion
Welcome to the Brahmastra Series! Join us for a comprehensive session on CSIR NET Unit 1: Molecules and their Interaction Relevant to Biology with the highly esteemed Urmimala Mam. This session is designed to provide you with a deep understanding of the molecular foundations of biology, crucial for excelling in the CSIR NET exam. 🔍 What We Will Cover: Biomolecules: Structure and function of carbohydrates, lipids, proteins, and nucleic acids. Enzyme Kinetics: Mechanisms of enzyme action, Michaelis-Menten kinetics, and enzyme inhibition. Bioenergetics: Concepts of thermodynamics in biological systems, ATP, and energy cycles. Molecular Interactions: Types of chemical bonds and interactions, hydrophobic, hydrophilic, and Van der Waals forces. Signal Transduction: Mechanisms of cell sig...
published: 19 Jun 2024 -
Structure Of The Cell Membrane: Active and Passive Transport
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look. Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biology Tutorials: http://bit.ly/ProfDaveBio Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths EMAIL► [email protected] PATREON► http://patreon.com/ProfessorDaveExplains Check out "Is This Wi-Fi Organic?", my book on disarming ...
published: 05 Sep 2016
developed with YouTube
7:12
Transport Proteins: Pumps, Channels, Carriers
- Order: Reorder
- Duration: 7:12
- Uploaded Date: 01 Aug 2021
- views: 186646
📝Find notes here: https://www.nonstopneuron.com/post/cell-membrane-transport-proteins
Explore our entire animation video library at: https://www.nonstopneuron.c...
📝Find notes here: https://www.nonstopneuron.com/post/cell-membrane-transport-proteins
Explore our entire animation video library at: https://www.nonstopneuron.com/
Video Summary:
Transport proteins create a passage for lipid insoluble and larger molecules to cross the biological membrane. They can be pumps, channels or carriers. Pumps use energy from ATP to drive the primary active transport of a substance against its electrochemical gradient. Channels provide continuous passage for passive diffusion down the electrochemical gradient. Diffusion through channels is faster as multiple ions can pass through the channel during each opening. Pores are always open and gated channels switch between open and closed states. Carriers do not provide continuous passage. Movement through them is relatively slow. Uniporters move a single type of substance down its concentration gradient. Symporter moves one substance downhill and uses it's energy to move other substance uphill in same direction. Antiporters also move one substance downhill and uses it's energy to move other substance uphill but in opposite direction.
🎞 More videos on membrane transport
• Primary vs Secondary Active Transport: https://youtu.be/N-iBdwtQn4Q
• Transport Through The Cell Membrane: https://youtu.be/Vog-NMBNBKo
● Follow me at:
• Facebook: https://www.facebook.com/NonstopNeuron
• Instagram: https://www.instagram.com/NonstopNeuron/
Dr Vipul Navadiya
DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.
https://wn.com/Transport_Proteins_Pumps,_Channels,_Carriers
📝Find notes here: https://www.nonstopneuron.com/post/cell-membrane-transport-proteins
Explore our entire animation video library at: https://www.nonstopneuron.com/
Video Summary:
Transport proteins create a passage for lipid insoluble and larger molecules to cross the biological membrane. They can be pumps, channels or carriers. Pumps use energy from ATP to drive the primary active transport of a substance against its electrochemical gradient. Channels provide continuous passage for passive diffusion down the electrochemical gradient. Diffusion through channels is faster as multiple ions can pass through the channel during each opening. Pores are always open and gated channels switch between open and closed states. Carriers do not provide continuous passage. Movement through them is relatively slow. Uniporters move a single type of substance down its concentration gradient. Symporter moves one substance downhill and uses it's energy to move other substance uphill in same direction. Antiporters also move one substance downhill and uses it's energy to move other substance uphill but in opposite direction.
🎞 More videos on membrane transport
• Primary vs Secondary Active Transport: https://youtu.be/N-iBdwtQn4Q
• Transport Through The Cell Membrane: https://youtu.be/Vog-NMBNBKo
● Follow me at:
• Facebook: https://www.facebook.com/NonstopNeuron
• Instagram: https://www.instagram.com/NonstopNeuron/
Dr Vipul Navadiya
DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.
- published: 01 Aug 2021
- views: 186646
0:22
Kinesin protein walking on microtubule
- Order: Reorder
- Duration: 0:22
- Uploaded Date: 17 Aug 2012
- views: 1759029
Kinesin protein walking on a microtubule in a cell
Kinesin protein walking on a microtubule in a cell
https://wn.com/Kinesin_Protein_Walking_On_Microtubule
Kinesin protein walking on a microtubule in a cell
- published: 17 Aug 2012
- views: 1759029
7:50
Cell Transport
- Order: Reorder
- Duration: 7:50
- Uploaded Date: 24 Jun 2016
- views: 6236903
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand...
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
https://wn.com/Cell_Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
- published: 24 Jun 2016
- views: 6236903
0:51
Membrane Transport Proteins
- Order: Reorder
- Duration: 0:51
- Uploaded Date: 03 Oct 2018
- views: 10583
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as anot...
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4]
Contents
1 Difference between channels and carriers
2 Active diffusion
3 Facilitated diffusion
4 Reverse diffusion
5 Types
5.1 1: Channels/pores
5.2 2: Electrochemical potential-driven transporters
5.3 3: Primary active transporters
5.4 4: Group translocators
5.5 5: Electron carriers
6 Examples
7 Pathology
8 See also
9 References
10 External links
Difference between channels and carriers
A carrier is not open simultaneously to both the extracellular and intracellular environments. Either its inner gate is open, or outer gate is open. In contrast, a channel can be open to both environments at the same time, allowing the molecules to diffuse without interruption. Carriers have binding sites, but pores and channels do not.[5][6][7] When a channel is opened, millions of ions can pass through the membrane per second, but only 100 to 1000 molecules typically pass through a carrier molecule in the same time.[8] Each carrier protein is designed to recognize only one substance or one group of very similar substances. Research has correlated defects in specific carrier proteins with specific diseases.[9]
Active diffusion
Main article: Active transport
The action of the sodium-potassium pump is an example of primary active transport. The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell.
Active transport is the movement of a substance across a membrane against its concentration gradient. This is usually to accumulate high concentrations of molecules that a cell needs, such as glucose or amino acids. If the process uses chemical energy, such as adenosine triphosphate (ATP), it is called primary active transport. Secondary active transport involves the use of an electrochemical gradient, and does not use energy produced in the cell.[10] Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.[11] A carrier protein is required to move particles from areas of low concentration to areas of high concentration. These carrier proteins have receptors that bind to a specific molecule (substrate) needing transport. The molecule or ion to be transported (the substrate) must first bind at a binding site at the carrier molecule, with a certain binding affinity. Following binding, and while the binding site is facing the same way, the carrier will capture or occlude (take in and retain) the substrate within its molecular structure and cause an internal translocation so that the opening in the protein now faces the other side of the plasma membrane.[12] The carrier protein substrate is released at that site, according to its binding affinity there.
https://wn.com/Membrane_Transport_Proteins
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4]
Contents
1 Difference between channels and carriers
2 Active diffusion
3 Facilitated diffusion
4 Reverse diffusion
5 Types
5.1 1: Channels/pores
5.2 2: Electrochemical potential-driven transporters
5.3 3: Primary active transporters
5.4 4: Group translocators
5.5 5: Electron carriers
6 Examples
7 Pathology
8 See also
9 References
10 External links
Difference between channels and carriers
A carrier is not open simultaneously to both the extracellular and intracellular environments. Either its inner gate is open, or outer gate is open. In contrast, a channel can be open to both environments at the same time, allowing the molecules to diffuse without interruption. Carriers have binding sites, but pores and channels do not.[5][6][7] When a channel is opened, millions of ions can pass through the membrane per second, but only 100 to 1000 molecules typically pass through a carrier molecule in the same time.[8] Each carrier protein is designed to recognize only one substance or one group of very similar substances. Research has correlated defects in specific carrier proteins with specific diseases.[9]
Active diffusion
Main article: Active transport
The action of the sodium-potassium pump is an example of primary active transport. The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell.
Active transport is the movement of a substance across a membrane against its concentration gradient. This is usually to accumulate high concentrations of molecules that a cell needs, such as glucose or amino acids. If the process uses chemical energy, such as adenosine triphosphate (ATP), it is called primary active transport. Secondary active transport involves the use of an electrochemical gradient, and does not use energy produced in the cell.[10] Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.[11] A carrier protein is required to move particles from areas of low concentration to areas of high concentration. These carrier proteins have receptors that bind to a specific molecule (substrate) needing transport. The molecule or ion to be transported (the substrate) must first bind at a binding site at the carrier molecule, with a certain binding affinity. Following binding, and while the binding site is facing the same way, the carrier will capture or occlude (take in and retain) the substrate within its molecular structure and cause an internal translocation so that the opening in the protein now faces the other side of the plasma membrane.[12] The carrier protein substrate is released at that site, according to its binding affinity there.
- published: 03 Oct 2018
- views: 10583
1:23:22
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
- Order: Reorder
- Duration: 1:23:22
- Uploaded Date: 22 Mar 2021
- views: 1074693
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms....
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below!
Outline (Contributed by Community Member Owen Dane Rosco):
00:00 - Intro and Overview
00:31 - Simple Diffusion
10:37 - Facilitated Diffusion
26:46 - Primary Active Transport
39:57 - Secondary Active Transport
57:09 - Vesicular Transport
57:42 - Pinocytosis
1:01:15 - Phagocytosis
1:07:44 - Receptor-Mediated Endocytosis
1:15:29 - Exocytosis
1:22:47 - Wrap-up
Join this channel to get access to perks:
https://www.youtube.com/channel/UC6QYFutt9cluQ3uSM963_KQ/join
APPAREL |
We are switching merchandise suppliers.
DONATE
PATREON | https://www.patreon.com/NinjaNerdScience
PAYPAL | https://www.paypal.com/paypalme/ninjanerdscience
SOCIAL MEDIA
FACEBOOK | https://www.facebook.com/NinjaNerdlectures
INSTAGRAM | https://www.instagram.com/ninjanerdlectures
TWITTER | https://twitter.com/ninjanerdsci
@NinjaNerdSci
DISCORD | https://discord.gg/3srTG4dngW
#ninjanerd #MembraneTransport #CellBiology
https://wn.com/Cell_Biology_|_Passive_Active_Transport_|_Endocytosis_Exocytosis
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below!
Outline (Contributed by Community Member Owen Dane Rosco):
00:00 - Intro and Overview
00:31 - Simple Diffusion
10:37 - Facilitated Diffusion
26:46 - Primary Active Transport
39:57 - Secondary Active Transport
57:09 - Vesicular Transport
57:42 - Pinocytosis
1:01:15 - Phagocytosis
1:07:44 - Receptor-Mediated Endocytosis
1:15:29 - Exocytosis
1:22:47 - Wrap-up
Join this channel to get access to perks:
https://www.youtube.com/channel/UC6QYFutt9cluQ3uSM963_KQ/join
APPAREL |
We are switching merchandise suppliers.
DONATE
PATREON | https://www.patreon.com/NinjaNerdScience
PAYPAL | https://www.paypal.com/paypalme/ninjanerdscience
SOCIAL MEDIA
FACEBOOK | https://www.facebook.com/NinjaNerdlectures
INSTAGRAM | https://www.instagram.com/ninjanerdlectures
TWITTER | https://twitter.com/ninjanerdsci
@NinjaNerdSci
DISCORD | https://discord.gg/3srTG4dngW
#ninjanerd #MembraneTransport #CellBiology
- published: 22 Mar 2021
- views: 1074693
11:45
In Da Club - Membranes & Transport: Crash Course Biology #5
- Order: Reorder
- Duration: 11:45
- Uploaded Date: 27 Feb 2012
- views: 5870981
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission...
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
https://wn.com/In_Da_Club_Membranes_Transport_Crash_Course_Biology_5
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
- published: 27 Feb 2012
- views: 5870981
5:14
A Day in the Life of a Motor Protein
- Order: Reorder
- Duration: 5:14
- Uploaded Date: 19 Oct 2013
- views: 2828739
The primary aim of the Hoogenraad research lab at the University of Utrecht, the Netherlands, is to understand how intracellular protein transport underlies the...
The primary aim of the Hoogenraad research lab at the University of Utrecht, the Netherlands, is to understand how intracellular protein transport underlies the development and function of nerve cells. During this 5 min movie we follow John, a motor protein, who has to transport his package to the right destination in the nerve cell, illustrating the relevance and mechanisms of proper intracellular transport in the nervous system.
http://cellbiology.science.uu.nl
http://NCUtrecht.nl
http://redrumbureau.nl
Permission to use this video is not required. When you use our materials in print, on the Web or in a video or audio format, we simply request that you credit the "Hoogenraad lab at the Utrecht University" and refer to our website at http://cellbiology.science.uu.nl
https://wn.com/A_Day_In_The_Life_Of_A_Motor_Protein
The primary aim of the Hoogenraad research lab at the University of Utrecht, the Netherlands, is to understand how intracellular protein transport underlies the development and function of nerve cells. During this 5 min movie we follow John, a motor protein, who has to transport his package to the right destination in the nerve cell, illustrating the relevance and mechanisms of proper intracellular transport in the nervous system.
http://cellbiology.science.uu.nl
http://NCUtrecht.nl
http://redrumbureau.nl
Permission to use this video is not required. When you use our materials in print, on the Web or in a video or audio format, we simply request that you credit the "Hoogenraad lab at the Utrecht University" and refer to our website at http://cellbiology.science.uu.nl
- published: 19 Oct 2013
- views: 2828739
0:23
Kinesin Motor Protein 3D Animation (with Labels)
- Order: Reorder
- Duration: 0:23
- Uploaded Date: 16 Feb 2023
- views: 68233
3D Medical Animation by John Liebler – Kinesin Motor Protein “walking” along a microtubule filament, transporting molecular cargo such as neurotransmitters from...
3D Medical Animation by John Liebler – Kinesin Motor Protein “walking” along a microtubule filament, transporting molecular cargo such as neurotransmitters from one part of the cell to another. (Posted on Facebook)
Art of the Cell: Medical & Scientific 3D Animation & Illustration @WaimuWaimu
Check out his channel, website, and social media
Also check out my biology playlist: https://youtube.com/playlist?list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE
The video depicts a kinesin motor protein pulling a vesicle full of cargo, such as proteins, across a microtubule filament. Eukaryotic cells contain many membrane-bound organelles, such as the Golgi apparatus, which the vesicles recognize with their membrane proteins and fuse into the target organelle's membrane.
How kinesin moves: https://youtu.be/YAva4g3Pk6k
More information on vesicle transport: The Mechanism of Vesicular Transport - The Cell - NCBI Bookshelf
Video on vesicle transport: https://youtu.be/ABGlD1vQG3s
Simulation of vesicle full of cargo: https://youtu.be/ugfAe0ovB8w
Videos on microtubules: https://www.youtube.com/watch?v=tO-W8mvBa78&list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE&index=40 |
https://youtu.be/YGU0uN_RAIo | https://www.youtube.com/watch?v=4BAGI6LbHeo&list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE&index=40 | https://youtu.be/-qV__tYb4c4
Music: "Dragon Fish" by @C418
https://wn.com/Kinesin_Motor_Protein_3D_Animation_(With_Labels)
3D Medical Animation by John Liebler – Kinesin Motor Protein “walking” along a microtubule filament, transporting molecular cargo such as neurotransmitters from one part of the cell to another. (Posted on Facebook)
Art of the Cell: Medical & Scientific 3D Animation & Illustration @WaimuWaimu
Check out his channel, website, and social media
Also check out my biology playlist: https://youtube.com/playlist?list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE
The video depicts a kinesin motor protein pulling a vesicle full of cargo, such as proteins, across a microtubule filament. Eukaryotic cells contain many membrane-bound organelles, such as the Golgi apparatus, which the vesicles recognize with their membrane proteins and fuse into the target organelle's membrane.
How kinesin moves: https://youtu.be/YAva4g3Pk6k
More information on vesicle transport: The Mechanism of Vesicular Transport - The Cell - NCBI Bookshelf
Video on vesicle transport: https://youtu.be/ABGlD1vQG3s
Simulation of vesicle full of cargo: https://youtu.be/ugfAe0ovB8w
Videos on microtubules: https://www.youtube.com/watch?v=tO-W8mvBa78&list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE&index=40 |
https://youtu.be/YGU0uN_RAIo | https://www.youtube.com/watch?v=4BAGI6LbHeo&list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE&index=40 | https://youtu.be/-qV__tYb4c4
Music: "Dragon Fish" by @C418
- published: 16 Feb 2023
- views: 68233
1:03:52
Brahmastra series - CSIR NET Unit 1 Q&A Discussion
- Order: Reorder
- Duration: 1:03:52
- Uploaded Date: 19 Jun 2024
- views: 510
Welcome to the Brahmastra Series! Join us for a comprehensive session on CSIR NET Unit 1: Molecules and their Interaction Relevant to Biology with the highly es...
Welcome to the Brahmastra Series! Join us for a comprehensive session on CSIR NET Unit 1: Molecules and their Interaction Relevant to Biology with the highly esteemed Urmimala Mam. This session is designed to provide you with a deep understanding of the molecular foundations of biology, crucial for excelling in the CSIR NET exam.
🔍 What We Will Cover:
Biomolecules: Structure and function of carbohydrates, lipids, proteins, and nucleic acids.
Enzyme Kinetics: Mechanisms of enzyme action, Michaelis-Menten kinetics, and enzyme inhibition.
Bioenergetics: Concepts of thermodynamics in biological systems, ATP, and energy cycles.
Molecular Interactions: Types of chemical bonds and interactions, hydrophobic, hydrophilic, and Van der Waals forces.
Signal Transduction: Mechanisms of cell signaling and receptor-ligand interactions.
📝 Interactive Q&A:
Got questions or doubts? Urmimala Mam will be answering them live! This is your chance to clarify any uncertainties. Submit your questions in the chat, and we’ll address them during the session.
https://wn.com/Brahmastra_Series_Csir_Net_Unit_1_Q_A_Discussion
Welcome to the Brahmastra Series! Join us for a comprehensive session on CSIR NET Unit 1: Molecules and their Interaction Relevant to Biology with the highly esteemed Urmimala Mam. This session is designed to provide you with a deep understanding of the molecular foundations of biology, crucial for excelling in the CSIR NET exam.
🔍 What We Will Cover:
Biomolecules: Structure and function of carbohydrates, lipids, proteins, and nucleic acids.
Enzyme Kinetics: Mechanisms of enzyme action, Michaelis-Menten kinetics, and enzyme inhibition.
Bioenergetics: Concepts of thermodynamics in biological systems, ATP, and energy cycles.
Molecular Interactions: Types of chemical bonds and interactions, hydrophobic, hydrophilic, and Van der Waals forces.
Signal Transduction: Mechanisms of cell signaling and receptor-ligand interactions.
📝 Interactive Q&A:
Got questions or doubts? Urmimala Mam will be answering them live! This is your chance to clarify any uncertainties. Submit your questions in the chat, and we’ll address them during the session.
- published: 19 Jun 2024
- views: 510
6:53
Structure Of The Cell Membrane: Active and Passive Transport
- Order: Reorder
- Duration: 6:53
- Uploaded Date: 05 Sep 2016
- views: 771367
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do mol...
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look.
Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
Biology Tutorials: http://bit.ly/ProfDaveBio
Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1
Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2
Mathematics Tutorials: http://bit.ly/ProfDaveMaths
EMAIL► [email protected]
PATREON► http://patreon.com/ProfessorDaveExplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: https://amzn.to/2HtNpVH
Bookshop: https://bit.ly/39cKADM
Barnes and Noble: https://bit.ly/3pUjmrn
Book Depository: http://bit.ly/3aOVDlT
https://wn.com/Structure_Of_The_Cell_Membrane_Active_And_Passive_Transport
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look.
Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
Biology Tutorials: http://bit.ly/ProfDaveBio
Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1
Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2
Mathematics Tutorials: http://bit.ly/ProfDaveMaths
EMAIL► [email protected]
PATREON► http://patreon.com/ProfessorDaveExplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: https://amzn.to/2HtNpVH
Bookshop: https://bit.ly/39cKADM
Barnes and Noble: https://bit.ly/3pUjmrn
Book Depository: http://bit.ly/3aOVDlT
- published: 05 Sep 2016
- views: 771367
-
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport. Transcript/Notes (partial) Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy. Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis. Diffusion is the movement of a substance from where it has a high con...
published: 15 Jan 2018 -
Cell Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇 Table of Contents: Intro 00:00 Importance of Cell Membrane for Homeostasis 0:41 Cell Membrane Structure 1:07 Simple Diffusion 1:45 What does it mean to "go with the concentration gradient?" 2:20 Facilitated Diffusion 2:38 Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36) Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis. The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The A...
published: 24 Jun 2016 -
Membrane Transport, Animation
(USMLE topics) Cell transport: permeability of the cell membrane to various molecules, types of ion channels and transporters. Purchase a license to download a non-watermarked version of this video on AlilaMedicalMedia(dot)com Check out our new Alila Academy - AlilaAcademy(dot)com - complete video courses with quizzes, PDFs, and downloadable images. ©Alila Medical Media. All rights reserved. Voice by: Ashley Fleming All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition. All animal cells are enclosed in a plasma membrane, which consists of 2 layers of phospholipi...
published: 08 May 2018 -
Structure Of The Cell Membrane: Active and Passive Transport
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look. Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biology Tutorials: http://bit.ly/ProfDaveBio Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths EMAIL► [email protected] PATREON► http://patreon.com/ProfessorDaveExplains Check out "Is This Wi-Fi Organic?", my book on disarming ...
published: 05 Sep 2016 -
In Da Club - Membranes & Transport: Crash Course Biology #5
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. "Concert" music used with permission from Chameleon Circuit. This video uses sounds from Freesound.org Table of Contents time codes: 1) Passive Transport - 1:17 2) Diffusion - 1:25 3) Osmosis - 2:12 4) Channel Proteins- 4:37 5) Active Transport - 4:58 6) ATP - 5:37 7) Transport Proteins - 6:19 8) Biolography - 6:37 9) Vesicular Transport - 9:02 10) Exocytosis - 9:21 11) Endocytosis - 9:50 12) Phagocytosis - 9:57 13) Pinocytosis - 10:29 14) Receptor-Mediated Endocytosis - 10:48 Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook...
published: 27 Feb 2012 -
Cell Membrane Transport (Passive & Active) Diffusion, Osmosis, Hydrostatic Oncotic Pressure Colloid
Cell membrane transport: passive and active transport including simple diffusion, facilitated diffusion, osmosis, active transport along with water and solute movement through capillary wall: hydrostatic and oncotic pressure (colloid osmotic pressure). Forms of passive transport include: simple / facilitated diffusion and osmosis. ⭐Fluid and Electrolytes eBook: https://registerednursern.creator-spring.com/ Simple diffusion is the movement of solutes from a high concentration to a low concentration (requires no energy or help from channel proteins). Facilitated diffusion is like simple diffusion, but it uses channel proteins to move solutes. Capillary wall quiz: https://www.registerednursern.com/fluid-movement-capillary-wall-quiz-oncotic-hydrostatic-pressure/ Cell transport quiz: ht...
published: 27 Jun 2023 -
Membrane Transport
http://armandoh.org/ Facebook : http://www.facebook.com/ArmandoHasudungan
published: 03 Nov 2012 -
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
Official Ninja Nerd Website: https://ninjanerd.org Ninja Nerds! In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below! Outline (Contributed by Community Member Owen Dane Rosco): 00:00 - Intro and Overview 00:31 - Simple Diffusion 10:37 - Facilitated Diffusion 26:46 - Primary Active Transport 39:57 - Secondary Active Transport 57:09 - Vesicular Transport 57:42 - Pinocytosis 1:01:15 - Phagocytosis 1:07:44 - Receptor-Mediated Endocytosis 1:15:29 - Exocytosis 1:22:47 - Wrap-up J...
published: 22 Mar 2021 -
Auricle's Exam Mastery Biochemistry Live Class about Plasma Protein by Dr. Abhijeet
🎓 Welcome to Auricle: Your Ultimate MBBS Learning Hub! 🩺 Explore More : https://linktr.ee/auricle_official Instagram : https://bit.ly/3DdWtbE Telegram : https://t.me/auricle1styearmbbs Telegram : https://t.me/AuricleNEXTmbbs First Time Ever! Auricle has come up with groundbreaking techniques which Customized specifically for Medicos which is Student Centric approach with Unmatched Excellence. At Auricle, we’re more than just an educational platform—we are your trusted medical companion. Here’s what you receive after joining Auricle family : 🔬 Explore Recorded Classes to grasp complex concepts at your own pace. 📝 Test your knowledge with MCQs and access comprehensive Notes for thorough revision. 👨🔬 Join Practical Sessions to sharpen your clinical skills. 👩🏫 Benefit from our Mentorsh...
published: 30 Jun 2024 -
Osmosis | Membrane Transport
In this video, Dr Mike explains how osmosis is the movement of water through a semi-permeable membrane.
published: 28 May 2019
developed with YouTube
10:50
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
- Order: Reorder
- Duration: 10:50
- Uploaded Date: 15 Jan 2018
- views: 1106776
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrie...
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport.
Transcript/Notes (partial)
Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy.
Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis.
Diffusion is the movement of a substance from where it has a high concentration to where it has a low concentration, or the tendency of a substance to spread out evenly over a given space.
Simple diffusion occurs with solutes that are small and non polar. By being non polar they can move in between the phosphoipid molecules that form the plasma membrane because the interior region of the membrane is non polar. Some of the materials that move by simple diffusion include the gases O2, CO2, and small fatty acids. So, if there is a higher concentration of oxygen O2 molecules outside of a cell, they can move down the concentration gradient, across the membrane without assistance, and into the cell as long as the concentration gradient exists.
The second type of diffusion is facilitated diffusion. This applies to solutes that are small and either charged or polar. Because these solutes are polar, the non polar phospholipid bilayer blocks them from passing through the membrane and into or out of the cell by simple diffusion. However, they can pass into and out of the cell with the assistance of plasma membrane proteins through a process called facilitated diffusion. There are two types of facilitated diffusion, channel mediated diffusion and carrier mediated diffusion. The difference between the two is the type of transport protein used to move the substance across the membrane.
Channel mediated diffusion is when a ion, which is a charged particle where its total number of electrons does not equal its total number of protons giving it a positive or negative charge, moves across the membrane through a water filled protein channel. Each protein channel is typically specific for one type of ion, and there are two types of channels, a leak channel, which is continuously open, and a gated channel, which only opens due to a stimulus, and only stays open for a fraction of a second.
Carrier mediated diffusion involves the movement of polar molecules such as simple sugars or simple carbohydrates and amino acids across the membrane. This is accomplished by a carrier protein, which actually changes shape in the process. For instance glucose binds to a carrier protein, which changes shape and moves the glucose molecule to the other side of the membrane.
Now for osmosis. Osmosis is the passive movement of water through a selectively permeable membrane. This occurs when there is a difference in concentration of water on either side of the membrane. This can happen in one of two ways, water can slip between the phospholipid molecules that make up the plasma membrane, or through integral protein water channels that are called aquaporins.
Now lets look at active processes. As stated earlier, active processes require the use of cellular energy for membrane transport. There are two types of active processes, active transport and vesicular transport. Active transport is the movement of a solute against its concentration gradient, or going from an area of low concentration to a place of higher concentration. Vesicular transport is the transport of large substances across the plasma membrane by a vesicle, which is a membrane bound sac filled with materials.
Active transport has two types, primary active transport and secondary active transport.
In primary active transport cellular protein pumps called ion pumps move ions across the membrane, against their concentration gradient.
Timestamps
0:00 The structure of cell membranes
0:42 The 2 main membrane transport processes (passive and active)
1:12 What is diffusion?
2:11 Simple diffusion
3:05 Facilitated diffusion
3:44 Channel mediated diffusion
4:29 Carrier mediated diffusion
4:51 What is osmosis?
5:49 Active processes
6:01 Active transport
6:12 Vesicular transport
6:28 Primary active transport
7:27 Secondary active transport
8:37 The 2 types of vesicular transport
8:53 Exocytosis
9:23 Endocytosis
https://wn.com/Cell_Membrane_Transport_Transport_Across_A_Membrane_How_Do_Things_Move_Across_A_Cell_Membrane
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport.
Transcript/Notes (partial)
Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy.
Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis.
Diffusion is the movement of a substance from where it has a high concentration to where it has a low concentration, or the tendency of a substance to spread out evenly over a given space.
Simple diffusion occurs with solutes that are small and non polar. By being non polar they can move in between the phosphoipid molecules that form the plasma membrane because the interior region of the membrane is non polar. Some of the materials that move by simple diffusion include the gases O2, CO2, and small fatty acids. So, if there is a higher concentration of oxygen O2 molecules outside of a cell, they can move down the concentration gradient, across the membrane without assistance, and into the cell as long as the concentration gradient exists.
The second type of diffusion is facilitated diffusion. This applies to solutes that are small and either charged or polar. Because these solutes are polar, the non polar phospholipid bilayer blocks them from passing through the membrane and into or out of the cell by simple diffusion. However, they can pass into and out of the cell with the assistance of plasma membrane proteins through a process called facilitated diffusion. There are two types of facilitated diffusion, channel mediated diffusion and carrier mediated diffusion. The difference between the two is the type of transport protein used to move the substance across the membrane.
Channel mediated diffusion is when a ion, which is a charged particle where its total number of electrons does not equal its total number of protons giving it a positive or negative charge, moves across the membrane through a water filled protein channel. Each protein channel is typically specific for one type of ion, and there are two types of channels, a leak channel, which is continuously open, and a gated channel, which only opens due to a stimulus, and only stays open for a fraction of a second.
Carrier mediated diffusion involves the movement of polar molecules such as simple sugars or simple carbohydrates and amino acids across the membrane. This is accomplished by a carrier protein, which actually changes shape in the process. For instance glucose binds to a carrier protein, which changes shape and moves the glucose molecule to the other side of the membrane.
Now for osmosis. Osmosis is the passive movement of water through a selectively permeable membrane. This occurs when there is a difference in concentration of water on either side of the membrane. This can happen in one of two ways, water can slip between the phospholipid molecules that make up the plasma membrane, or through integral protein water channels that are called aquaporins.
Now lets look at active processes. As stated earlier, active processes require the use of cellular energy for membrane transport. There are two types of active processes, active transport and vesicular transport. Active transport is the movement of a solute against its concentration gradient, or going from an area of low concentration to a place of higher concentration. Vesicular transport is the transport of large substances across the plasma membrane by a vesicle, which is a membrane bound sac filled with materials.
Active transport has two types, primary active transport and secondary active transport.
In primary active transport cellular protein pumps called ion pumps move ions across the membrane, against their concentration gradient.
Timestamps
0:00 The structure of cell membranes
0:42 The 2 main membrane transport processes (passive and active)
1:12 What is diffusion?
2:11 Simple diffusion
3:05 Facilitated diffusion
3:44 Channel mediated diffusion
4:29 Carrier mediated diffusion
4:51 What is osmosis?
5:49 Active processes
6:01 Active transport
6:12 Vesicular transport
6:28 Primary active transport
7:27 Secondary active transport
8:37 The 2 types of vesicular transport
8:53 Exocytosis
9:23 Endocytosis
- published: 15 Jan 2018
- views: 1106776
7:50
Cell Transport
- Order: Reorder
- Duration: 7:50
- Uploaded Date: 24 Jun 2016
- views: 6236903
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand...
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
https://wn.com/Cell_Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
- published: 24 Jun 2016
- views: 6236903
3:08
Membrane Transport, Animation
- Order: Reorder
- Duration: 3:08
- Uploaded Date: 08 May 2018
- views: 242236
(USMLE topics) Cell transport: permeability of the cell membrane to various molecules, types of ion channels and transporters.
Purchase a license to download ...
(USMLE topics) Cell transport: permeability of the cell membrane to various molecules, types of ion channels and transporters.
Purchase a license to download a non-watermarked version of this video on AlilaMedicalMedia(dot)com
Check out our new Alila Academy - AlilaAcademy(dot)com - complete video courses with quizzes, PDFs, and downloadable images.
©Alila Medical Media. All rights reserved.
Voice by: Ashley Fleming
All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
All animal cells are enclosed in a plasma membrane, which consists of 2 layers of phospholipids. The hydrophobic nature of the cell membrane makes it intrinsically permeable to small NON-polar and uncharged polar molecules, but NON-permeable to large polar molecules and CHARGED particles. Charged particles, such as ions, must use special channels to move through the membrane.
Transport of a molecule can be passive or active. PASSIVE transport does NOT require energy input because it moves the molecules “DOWNHILL”, for example, from HIGHER to LOWER concentration. ACTIVE transport, on the other hand, moves the molecules AGAINST their gradients and therefore requires ENERGY expenditure.
Ion channels permit PASSIVE transport of ions. These are transmembrane proteins that form PORES for ions to pass through. Most ion channels are SPECIFIC for a certain type of ion.
Ion channels can be classified by how they change their OPEN-CLOSED state in RESPONSE to different factors of the environment. Common types of ion channels include:
- LEAK channels: these channels are almost always OPEN allowing more or less steady flow of ions; examples are potassium and sodium leak channels in neurons.
- LIGAND-gated ion channels: these channels OPEN upon BINDING of a LIGAND. They are most commonly found at synapses, where neurons communicate via chemical messages, or neurotransmitters. An example is the GABA receptor, a chloride channel located on POST-synaptic neurons. It OPENS upon binding to GABA, a neurotransmitter released by the PRE-synaptic neuron, and allows chloride ions to flow into the cell.
- VOLTAGE-gated ion channels: these channels are REGULATED by membrane voltage. They OPEN at some values of the membrane potential and CLOSE at others. These are the channels that underlie ACTION POTENTIALS in neurons and cardiac muscles.
ACTIVE transport of ions is carried out by ion transporters, or ion PUMPS. These are transmembrane proteins that PUMP ions AGAINST their concentration gradient using cellular ENERGY, such as ATP. Most notable example is the sodium-potassium pump which maintains the resting potential in neurons by pumping two potassium IN and three sodium OUT of the cell.
Another type of ion transporters, known as SECONDARY transporters, do NOT use ATP directly. Instead, they move ONE ion DOWN its concentration gradient and use THAT ENERGY to POWER the transport of a SECOND ion. Symporters transport the two ions in the same direction, while antiporters pump the coupled molecule in the OPPOSITE direction.
https://wn.com/Membrane_Transport,_Animation
(USMLE topics) Cell transport: permeability of the cell membrane to various molecules, types of ion channels and transporters.
Purchase a license to download a non-watermarked version of this video on AlilaMedicalMedia(dot)com
Check out our new Alila Academy - AlilaAcademy(dot)com - complete video courses with quizzes, PDFs, and downloadable images.
©Alila Medical Media. All rights reserved.
Voice by: Ashley Fleming
All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
All animal cells are enclosed in a plasma membrane, which consists of 2 layers of phospholipids. The hydrophobic nature of the cell membrane makes it intrinsically permeable to small NON-polar and uncharged polar molecules, but NON-permeable to large polar molecules and CHARGED particles. Charged particles, such as ions, must use special channels to move through the membrane.
Transport of a molecule can be passive or active. PASSIVE transport does NOT require energy input because it moves the molecules “DOWNHILL”, for example, from HIGHER to LOWER concentration. ACTIVE transport, on the other hand, moves the molecules AGAINST their gradients and therefore requires ENERGY expenditure.
Ion channels permit PASSIVE transport of ions. These are transmembrane proteins that form PORES for ions to pass through. Most ion channels are SPECIFIC for a certain type of ion.
Ion channels can be classified by how they change their OPEN-CLOSED state in RESPONSE to different factors of the environment. Common types of ion channels include:
- LEAK channels: these channels are almost always OPEN allowing more or less steady flow of ions; examples are potassium and sodium leak channels in neurons.
- LIGAND-gated ion channels: these channels OPEN upon BINDING of a LIGAND. They are most commonly found at synapses, where neurons communicate via chemical messages, or neurotransmitters. An example is the GABA receptor, a chloride channel located on POST-synaptic neurons. It OPENS upon binding to GABA, a neurotransmitter released by the PRE-synaptic neuron, and allows chloride ions to flow into the cell.
- VOLTAGE-gated ion channels: these channels are REGULATED by membrane voltage. They OPEN at some values of the membrane potential and CLOSE at others. These are the channels that underlie ACTION POTENTIALS in neurons and cardiac muscles.
ACTIVE transport of ions is carried out by ion transporters, or ion PUMPS. These are transmembrane proteins that PUMP ions AGAINST their concentration gradient using cellular ENERGY, such as ATP. Most notable example is the sodium-potassium pump which maintains the resting potential in neurons by pumping two potassium IN and three sodium OUT of the cell.
Another type of ion transporters, known as SECONDARY transporters, do NOT use ATP directly. Instead, they move ONE ion DOWN its concentration gradient and use THAT ENERGY to POWER the transport of a SECOND ion. Symporters transport the two ions in the same direction, while antiporters pump the coupled molecule in the OPPOSITE direction.
- published: 08 May 2018
- views: 242236
6:53
Structure Of The Cell Membrane: Active and Passive Transport
- Order: Reorder
- Duration: 6:53
- Uploaded Date: 05 Sep 2016
- views: 771367
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do mol...
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look.
Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
Biology Tutorials: http://bit.ly/ProfDaveBio
Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1
Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2
Mathematics Tutorials: http://bit.ly/ProfDaveMaths
EMAIL► [email protected]
PATREON► http://patreon.com/ProfessorDaveExplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: https://amzn.to/2HtNpVH
Bookshop: https://bit.ly/39cKADM
Barnes and Noble: https://bit.ly/3pUjmrn
Book Depository: http://bit.ly/3aOVDlT
https://wn.com/Structure_Of_The_Cell_Membrane_Active_And_Passive_Transport
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look.
Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
Biology Tutorials: http://bit.ly/ProfDaveBio
Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1
Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2
Mathematics Tutorials: http://bit.ly/ProfDaveMaths
EMAIL► [email protected]
PATREON► http://patreon.com/ProfessorDaveExplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: https://amzn.to/2HtNpVH
Bookshop: https://bit.ly/39cKADM
Barnes and Noble: https://bit.ly/3pUjmrn
Book Depository: http://bit.ly/3aOVDlT
- published: 05 Sep 2016
- views: 771367
11:45
In Da Club - Membranes & Transport: Crash Course Biology #5
- Order: Reorder
- Duration: 11:45
- Uploaded Date: 27 Feb 2012
- views: 5870981
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission...
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
https://wn.com/In_Da_Club_Membranes_Transport_Crash_Course_Biology_5
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
- published: 27 Feb 2012
- views: 5870981
13:55
Cell Membrane Transport (Passive & Active) Diffusion, Osmosis, Hydrostatic Oncotic Pressure Colloid
- Order: Reorder
- Duration: 13:55
- Uploaded Date: 27 Jun 2023
- views: 112554
Cell membrane transport: passive and active transport including simple diffusion, facilitated diffusion, osmosis, active transport along with water and solute m...
Cell membrane transport: passive and active transport including simple diffusion, facilitated diffusion, osmosis, active transport along with water and solute movement through capillary wall: hydrostatic and oncotic pressure (colloid osmotic pressure).
Forms of passive transport include: simple / facilitated diffusion and osmosis.
⭐Fluid and Electrolytes eBook: https://registerednursern.creator-spring.com/
Simple diffusion is the movement of solutes from a high concentration to a low concentration (requires no energy or help from channel proteins). Facilitated diffusion is like simple diffusion, but it uses channel proteins to move solutes.
Capillary wall quiz: https://www.registerednursern.com/fluid-movement-capillary-wall-quiz-oncotic-hydrostatic-pressure/
Cell transport quiz: https://www.registerednursern.com/cell-transport-quiz/
Notes: https://www.registerednursern.com/cell-membrane-transport-passive-active-hydrostatic-oncotic-pressure/
Osmosis is the movement of water from a high concentration of water to a low concentration of water, or in other words, water moves from a low solute concentration to a high solute concentration.
Active transport is a process that uses energy in the form of ATP to movement solutes from a low concentration to a high concentration gradient (against the concentration gradient) via channel protein proteins.
In order to movement water and solutes through the capillary wall, the body uses hydrostatic and oncotic pressure (also called colloidal osmotic pressure).
Hydrostatic pressure is the pushing effect on water through the capillary wall and leads to filtration. While oncotic pressure is the pulling effect on water through the capillary wall and helps keep water in the plasma (intravascular compartment). This process is highly influenced by albumin (a colloidal).
Website: https://www.registerednursern.com/
More Videos: https://www.youtube.com/watch?v=R2XMro13dD0&list=UUPyMN8DzkFl2__xnTEiGZ1w
Nursing Gear: https://teespring.com/stores/registerednursern
Instagram: https://www.instagram.com/registerednursern_com/
Facebook: https://www.facebook.com/RegisteredNurseRNs
Twitter: https://twitter.com/NursesRN
Popular Playlists:
NCLEX Reviews: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWtwCDmLHyX2UeHofCIcgo0
Fluid & Electrolytes: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWJSZ9pL8L3Q1dzdlxUzeKv
Nursing Skills: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUhd_qQYEbp0Eab3uUKhgKb
https://wn.com/Cell_Membrane_Transport_(Passive_Active)_Diffusion,_Osmosis,_Hydrostatic_Oncotic_Pressure_Colloid
Cell membrane transport: passive and active transport including simple diffusion, facilitated diffusion, osmosis, active transport along with water and solute movement through capillary wall: hydrostatic and oncotic pressure (colloid osmotic pressure).
Forms of passive transport include: simple / facilitated diffusion and osmosis.
⭐Fluid and Electrolytes eBook: https://registerednursern.creator-spring.com/
Simple diffusion is the movement of solutes from a high concentration to a low concentration (requires no energy or help from channel proteins). Facilitated diffusion is like simple diffusion, but it uses channel proteins to move solutes.
Capillary wall quiz: https://www.registerednursern.com/fluid-movement-capillary-wall-quiz-oncotic-hydrostatic-pressure/
Cell transport quiz: https://www.registerednursern.com/cell-transport-quiz/
Notes: https://www.registerednursern.com/cell-membrane-transport-passive-active-hydrostatic-oncotic-pressure/
Osmosis is the movement of water from a high concentration of water to a low concentration of water, or in other words, water moves from a low solute concentration to a high solute concentration.
Active transport is a process that uses energy in the form of ATP to movement solutes from a low concentration to a high concentration gradient (against the concentration gradient) via channel protein proteins.
In order to movement water and solutes through the capillary wall, the body uses hydrostatic and oncotic pressure (also called colloidal osmotic pressure).
Hydrostatic pressure is the pushing effect on water through the capillary wall and leads to filtration. While oncotic pressure is the pulling effect on water through the capillary wall and helps keep water in the plasma (intravascular compartment). This process is highly influenced by albumin (a colloidal).
Website: https://www.registerednursern.com/
More Videos: https://www.youtube.com/watch?v=R2XMro13dD0&list=UUPyMN8DzkFl2__xnTEiGZ1w
Nursing Gear: https://teespring.com/stores/registerednursern
Instagram: https://www.instagram.com/registerednursern_com/
Facebook: https://www.facebook.com/RegisteredNurseRNs
Twitter: https://twitter.com/NursesRN
Popular Playlists:
NCLEX Reviews: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWtwCDmLHyX2UeHofCIcgo0
Fluid & Electrolytes: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWJSZ9pL8L3Q1dzdlxUzeKv
Nursing Skills: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUhd_qQYEbp0Eab3uUKhgKb
- published: 27 Jun 2023
- views: 112554
8:52
Membrane Transport
- Order: Reorder
- Duration: 8:52
- Uploaded Date: 03 Nov 2012
- views: 151335
http://armandoh.org/
Facebook : http://www.facebook.com/ArmandoHasudungan
http://armandoh.org/
Facebook : http://www.facebook.com/ArmandoHasudungan
https://wn.com/Membrane_Transport
http://armandoh.org/
Facebook : http://www.facebook.com/ArmandoHasudungan
- published: 03 Nov 2012
- views: 151335
1:23:22
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
- Order: Reorder
- Duration: 1:23:22
- Uploaded Date: 22 Mar 2021
- views: 1074693
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms....
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below!
Outline (Contributed by Community Member Owen Dane Rosco):
00:00 - Intro and Overview
00:31 - Simple Diffusion
10:37 - Facilitated Diffusion
26:46 - Primary Active Transport
39:57 - Secondary Active Transport
57:09 - Vesicular Transport
57:42 - Pinocytosis
1:01:15 - Phagocytosis
1:07:44 - Receptor-Mediated Endocytosis
1:15:29 - Exocytosis
1:22:47 - Wrap-up
Join this channel to get access to perks:
https://www.youtube.com/channel/UC6QYFutt9cluQ3uSM963_KQ/join
APPAREL |
We are switching merchandise suppliers.
DONATE
PATREON | https://www.patreon.com/NinjaNerdScience
PAYPAL | https://www.paypal.com/paypalme/ninjanerdscience
SOCIAL MEDIA
FACEBOOK | https://www.facebook.com/NinjaNerdlectures
INSTAGRAM | https://www.instagram.com/ninjanerdlectures
TWITTER | https://twitter.com/ninjanerdsci
@NinjaNerdSci
DISCORD | https://discord.gg/3srTG4dngW
#ninjanerd #MembraneTransport #CellBiology
https://wn.com/Cell_Biology_|_Passive_Active_Transport_|_Endocytosis_Exocytosis
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below!
Outline (Contributed by Community Member Owen Dane Rosco):
00:00 - Intro and Overview
00:31 - Simple Diffusion
10:37 - Facilitated Diffusion
26:46 - Primary Active Transport
39:57 - Secondary Active Transport
57:09 - Vesicular Transport
57:42 - Pinocytosis
1:01:15 - Phagocytosis
1:07:44 - Receptor-Mediated Endocytosis
1:15:29 - Exocytosis
1:22:47 - Wrap-up
Join this channel to get access to perks:
https://www.youtube.com/channel/UC6QYFutt9cluQ3uSM963_KQ/join
APPAREL |
We are switching merchandise suppliers.
DONATE
PATREON | https://www.patreon.com/NinjaNerdScience
PAYPAL | https://www.paypal.com/paypalme/ninjanerdscience
SOCIAL MEDIA
FACEBOOK | https://www.facebook.com/NinjaNerdlectures
INSTAGRAM | https://www.instagram.com/ninjanerdlectures
TWITTER | https://twitter.com/ninjanerdsci
@NinjaNerdSci
DISCORD | https://discord.gg/3srTG4dngW
#ninjanerd #MembraneTransport #CellBiology
- published: 22 Mar 2021
- views: 1074693
59:32
Auricle's Exam Mastery Biochemistry Live Class about Plasma Protein by Dr. Abhijeet
- Order: Reorder
- Duration: 59:32
- Uploaded Date: 30 Jun 2024
- views: 44
🎓 Welcome to Auricle: Your Ultimate MBBS Learning Hub! 🩺
Explore More : https://linktr.ee/auricle_official
Instagram : https://bit.ly/3DdWtbE
Telegram : https...
🎓 Welcome to Auricle: Your Ultimate MBBS Learning Hub! 🩺
Explore More : https://linktr.ee/auricle_official
Instagram : https://bit.ly/3DdWtbE
Telegram : https://t.me/auricle1styearmbbs
Telegram : https://t.me/AuricleNEXTmbbs
First Time Ever! Auricle has come up with groundbreaking techniques which Customized specifically for Medicos which is Student Centric approach with Unmatched Excellence. At Auricle, we’re more than just an educational platform—we are your trusted medical companion.
Here’s what you receive after joining Auricle family :
🔬 Explore Recorded Classes to grasp complex concepts at your own pace.
📝 Test your knowledge with MCQs and access comprehensive Notes for thorough revision.
👨🔬 Join Practical Sessions to sharpen your clinical skills.
👩🏫 Benefit from our Mentorship Program and Personal Mentor for personalized guidance.
🌐Join our interactive live sessions, where you can ask questions, engage with peers, and learn from the best. 🖥🗣
📝 Prepare with Mock Tests and ace your exams with confidence.
❓ Stuck on a concept? Our experts are just a click away. Clear your doubts with Individual Doubt Sessions.
📚 Theory + Practical = Success: Engage with our Theory and Practical Examination modules for comprehensive preparation.
🖥 Join our Online Live Classes for interactive learning from anywhere.
🚀 Last-minute exam prep? Our crash courses simplify essential knowledge into power-packed sessions. 📅🚑
📱Download our App for easy access to all our resources and stay ahead in your MBBS journey!💼
Subscribe to our Youtube channel now and join Auricle Education! 🌟
#mbbs #mbbs students # neet #neetpg #neet pg #mbbsonlineclasses #onlinembbsclass #mbbs student life #best mbbs course #best mbbs live classes #youtube #subscriber #follow #like #comment #live #auriculate #auricle#Auriculate#Auricle#anatomy #physiology #medico #medical #medicalstudent #medical #medischool #medicine #stethoscopelover #doctor #medicos #medicos #médicoscubanos#medical #medicine #surgery#pharamacology#spm #entertainment #news #medinews#ophthalmology #newstatus #AWN#auriculateweeklynews#weekly
#auriculate #auriclate#auricle#Auriculate#Auricle#anatomy #physiology #medico #medical #medicalstudent #medical #medischool #medicine #stethoscopelover #doctor #medicos #medicos #médicoscubanos#medical #medicine #surgery#pharamacology#spm #entertainment #news #medinews#ophthalmology #newstatus #AWN#auriculateweeklynews#weekly
https://wn.com/Auricle's_Exam_Mastery_Biochemistry_Live_Class_About_Plasma_Protein_By_Dr._Abhijeet
🎓 Welcome to Auricle: Your Ultimate MBBS Learning Hub! 🩺
Explore More : https://linktr.ee/auricle_official
Instagram : https://bit.ly/3DdWtbE
Telegram : https://t.me/auricle1styearmbbs
Telegram : https://t.me/AuricleNEXTmbbs
First Time Ever! Auricle has come up with groundbreaking techniques which Customized specifically for Medicos which is Student Centric approach with Unmatched Excellence. At Auricle, we’re more than just an educational platform—we are your trusted medical companion.
Here’s what you receive after joining Auricle family :
🔬 Explore Recorded Classes to grasp complex concepts at your own pace.
📝 Test your knowledge with MCQs and access comprehensive Notes for thorough revision.
👨🔬 Join Practical Sessions to sharpen your clinical skills.
👩🏫 Benefit from our Mentorship Program and Personal Mentor for personalized guidance.
🌐Join our interactive live sessions, where you can ask questions, engage with peers, and learn from the best. 🖥🗣
📝 Prepare with Mock Tests and ace your exams with confidence.
❓ Stuck on a concept? Our experts are just a click away. Clear your doubts with Individual Doubt Sessions.
📚 Theory + Practical = Success: Engage with our Theory and Practical Examination modules for comprehensive preparation.
🖥 Join our Online Live Classes for interactive learning from anywhere.
🚀 Last-minute exam prep? Our crash courses simplify essential knowledge into power-packed sessions. 📅🚑
📱Download our App for easy access to all our resources and stay ahead in your MBBS journey!💼
Subscribe to our Youtube channel now and join Auricle Education! 🌟
#mbbs #mbbs students # neet #neetpg #neet pg #mbbsonlineclasses #onlinembbsclass #mbbs student life #best mbbs course #best mbbs live classes #youtube #subscriber #follow #like #comment #live #auriculate #auricle#Auriculate#Auricle#anatomy #physiology #medico #medical #medicalstudent #medical #medischool #medicine #stethoscopelover #doctor #medicos #medicos #médicoscubanos#medical #medicine #surgery#pharamacology#spm #entertainment #news #medinews#ophthalmology #newstatus #AWN#auriculateweeklynews#weekly
#auriculate #auriclate#auricle#Auriculate#Auricle#anatomy #physiology #medico #medical #medicalstudent #medical #medischool #medicine #stethoscopelover #doctor #medicos #medicos #médicoscubanos#medical #medicine #surgery#pharamacology#spm #entertainment #news #medinews#ophthalmology #newstatus #AWN#auriculateweeklynews#weekly
- published: 30 Jun 2024
- views: 44
6:02
Osmosis | Membrane Transport
- Order: Reorder
- Duration: 6:02
- Uploaded Date: 28 May 2019
- views: 66479
In this video, Dr Mike explains how osmosis is the movement of water through a semi-permeable membrane.
In this video, Dr Mike explains how osmosis is the movement of water through a semi-permeable membrane.
https://wn.com/Osmosis_|_Membrane_Transport
In this video, Dr Mike explains how osmosis is the movement of water through a semi-permeable membrane.
- published: 28 May 2019
- views: 66479
10:50
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
In this video we discuss the different ways how substances transport across a cell membran...
published: 15 Jan 2018
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
- Report rights infringement
- published: 15 Jan 2018
- views: 1106776
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport.
Transcript/Notes (partial)
Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy.
Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis.
Diffusion is the movement of a substance from where it has a high concentration to where it has a low concentration, or the tendency of a substance to spread out evenly over a given space.
Simple diffusion occurs with solutes that are small and non polar. By being non polar they can move in between the phosphoipid molecules that form the plasma membrane because the interior region of the membrane is non polar. Some of the materials that move by simple diffusion include the gases O2, CO2, and small fatty acids. So, if there is a higher concentration of oxygen O2 molecules outside of a cell, they can move down the concentration gradient, across the membrane without assistance, and into the cell as long as the concentration gradient exists.
The second type of diffusion is facilitated diffusion. This applies to solutes that are small and either charged or polar. Because these solutes are polar, the non polar phospholipid bilayer blocks them from passing through the membrane and into or out of the cell by simple diffusion. However, they can pass into and out of the cell with the assistance of plasma membrane proteins through a process called facilitated diffusion. There are two types of facilitated diffusion, channel mediated diffusion and carrier mediated diffusion. The difference between the two is the type of transport protein used to move the substance across the membrane.
Channel mediated diffusion is when a ion, which is a charged particle where its total number of electrons does not equal its total number of protons giving it a positive or negative charge, moves across the membrane through a water filled protein channel. Each protein channel is typically specific for one type of ion, and there are two types of channels, a leak channel, which is continuously open, and a gated channel, which only opens due to a stimulus, and only stays open for a fraction of a second.
Carrier mediated diffusion involves the movement of polar molecules such as simple sugars or simple carbohydrates and amino acids across the membrane. This is accomplished by a carrier protein, which actually changes shape in the process. For instance glucose binds to a carrier protein, which changes shape and moves the glucose molecule to the other side of the membrane.
Now for osmosis. Osmosis is the passive movement of water through a selectively permeable membrane. This occurs when there is a difference in concentration of water on either side of the membrane. This can happen in one of two ways, water can slip between the phospholipid molecules that make up the plasma membrane, or through integral protein water channels that are called aquaporins.
Now lets look at active processes. As stated earlier, active processes require the use of cellular energy for membrane transport. There are two types of active processes, active transport and vesicular transport. Active transport is the movement of a solute against its concentration gradient, or going from an area of low concentration to a place of higher concentration. Vesicular transport is the transport of large substances across the plasma membrane by a vesicle, which is a membrane bound sac filled with materials.
Active transport has two types, primary active transport and secondary active transport.
In primary active transport cellular protein pumps called ion pumps move ions across the membrane, against their concentration gradient.
Timestamps
0:00 The structure of cell membranes
0:42 The 2 main membrane transport processes (passive and active)
1:12 What is diffusion?
2:11 Simple diffusion
3:05 Facilitated diffusion
3:44 Channel mediated diffusion
4:29 Carrier mediated diffusion
4:51 What is osmosis?
5:49 Active processes
6:01 Active transport
6:12 Vesicular transport
6:28 Primary active transport
7:27 Secondary active transport
8:37 The 2 types of vesicular transport
8:53 Exocytosis
9:23 Endocytosis
11:45
In Da Club - Membranes & Transport: Crash Course Biology #5
Hank describes how cells regulate their contents and communicate with one another via mech...
published: 27 Feb 2012
In Da Club - Membranes & Transport: Crash Course Biology #5
In Da Club - Membranes & Transport: Crash Course Biology #5
- Report rights infringement
- published: 27 Feb 2012
- views: 5870981
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
8:11
Cell membrane proteins | Cells | MCAT | Khan Academy
Learn about the different types of proteins that exist on the cell membrane. By William Ts...
published: 17 Sep 2013
Cell membrane proteins | Cells | MCAT | Khan Academy
Cell membrane proteins | Cells | MCAT | Khan Academy
- Report rights infringement
- published: 17 Sep 2013
- views: 606927
Learn about the different types of proteins that exist on the cell membrane. By William Tsai. Created by William Tsai.
Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-fluidity?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-membrane-overview/v/cell-membrane-overview-fluid-mosaic-model?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
MCAT on Khan Academy: Go ahead and practice some passage-based questions!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1
Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
0:51
Membrane Transport Proteins
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in ...
published: 03 Oct 2018
Membrane Transport Proteins
Membrane Transport Proteins
- Report rights infringement
- published: 03 Oct 2018
- views: 10583
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4]
Contents
1 Difference between channels and carriers
2 Active diffusion
3 Facilitated diffusion
4 Reverse diffusion
5 Types
5.1 1: Channels/pores
5.2 2: Electrochemical potential-driven transporters
5.3 3: Primary active transporters
5.4 4: Group translocators
5.5 5: Electron carriers
6 Examples
7 Pathology
8 See also
9 References
10 External links
Difference between channels and carriers
A carrier is not open simultaneously to both the extracellular and intracellular environments. Either its inner gate is open, or outer gate is open. In contrast, a channel can be open to both environments at the same time, allowing the molecules to diffuse without interruption. Carriers have binding sites, but pores and channels do not.[5][6][7] When a channel is opened, millions of ions can pass through the membrane per second, but only 100 to 1000 molecules typically pass through a carrier molecule in the same time.[8] Each carrier protein is designed to recognize only one substance or one group of very similar substances. Research has correlated defects in specific carrier proteins with specific diseases.[9]
Active diffusion
Main article: Active transport
The action of the sodium-potassium pump is an example of primary active transport. The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell.
Active transport is the movement of a substance across a membrane against its concentration gradient. This is usually to accumulate high concentrations of molecules that a cell needs, such as glucose or amino acids. If the process uses chemical energy, such as adenosine triphosphate (ATP), it is called primary active transport. Secondary active transport involves the use of an electrochemical gradient, and does not use energy produced in the cell.[10] Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.[11] A carrier protein is required to move particles from areas of low concentration to areas of high concentration. These carrier proteins have receptors that bind to a specific molecule (substrate) needing transport. The molecule or ion to be transported (the substrate) must first bind at a binding site at the carrier molecule, with a certain binding affinity. Following binding, and while the binding site is facing the same way, the carrier will capture or occlude (take in and retain) the substrate within its molecular structure and cause an internal translocation so that the opening in the protein now faces the other side of the plasma membrane.[12] The carrier protein substrate is released at that site, according to its binding affinity there.
1:07
Membrane Transport Proteins
Animation contrasting the function of two different types of membrane transport proteins. ...
published: 29 May 2013
Membrane Transport Proteins
Membrane Transport Proteins
- Report rights infringement
- published: 29 May 2013
- views: 35136
Animation contrasting the function of two different types of membrane transport proteins. Animated in Maya, composited in After Effects.
Membrane transport is the process by which things can pass through the cell membrane.
The first part of the animation shows a sodium ion (green) passing through an ion channel (purple). Ion channels are essentially passive tubes, which specific ions can pass through. Ions can move in either direction through an ion channel—whether ions go in or out of the cell is determined by their electrochemical gradient rather than anything about the ion channel. This animation features the ion channel NaK from Bacillus cereusion (PDB: 3E86), but the basic principle applies to all ion channels.
The second part of the animation shows lactose (white) moving through lactose permease (LacY, shown in blue), with the assistance of a proton (red). LacY is an example of secondary active transport, meaning that unlike an ion channel, LacY can transport lactose against its concentration gradient—for example, accumulating a higher concentration of lactose inside of the cell than outside of it. When both a lactose and a proton bind with LacY, the LacY changes configuration to allow both the lactose and the proton to enter the cell. This animation features LacY from Escherichia coli (PDB: 2V8N), but the basic principle applies to all symporters.
The PDB file for the NaK channel can be found here:
http://www.rcsb.org/pdb/explore.do?structureId=3E86
The PDB file for the LacY can be found here:
http://www.rcsb.org/pdb/explore.do?structureId=2v8n
7:50
Cell Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video...
published: 24 Jun 2016
Cell Transport
Cell Transport
- Report rights infringement
- published: 24 Jun 2016
- views: 6236903
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
11:19
In da club - membranes and transport | Crash Course biology | Khan Academy
Hank describes how cells regulate their contents and communicate with one another via mech...
published: 23 Apr 2019
In da club - membranes and transport | Crash Course biology | Khan Academy
In da club - membranes and transport | Crash Course biology | Khan Academy
- Report rights infringement
- published: 23 Apr 2019
- views: 102152
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane. Created by Crash Course.
View the next lesson: https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-106
Missed the previous lesson? https://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-104
5:27
MEMBRANE PROTEINS - Types and Functions
Membrane proteins are those proteins that are either a part of or interact with biological...
published: 08 Sep 2019
MEMBRANE PROTEINS - Types and Functions
MEMBRANE PROTEINS - Types and Functions
- Report rights infringement
- published: 08 Sep 2019
- views: 317103
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give difference kinds of membranes their unique properties. They help with both facilitated diffusion and active transport, connect cells together, participate in signal transduction, and act as markers for cell identification. Proteins carry out most of the specific functions of membranes, so the amount/types of proteins vary between different membranes. Membranes can be up to 75% protein by mass!
Membrane proteins can be integral/intrinsic or peripheral/extrinsic. Integral membrane proteins are a permanent part of the membrane, while peripheral proteins are only transiently associated with either the membrane or integral proteins, with hydrophobic, electrostatic, or other non-covalent interactions.
There are several different kinds of integral proteins. Integral monotopic proteins are attached to only one of the two leaflets of phospholipids making up the membrane and don’t span across. There are also transmembrane proteins and lipid-anchored proteins. Transmembrane proteins are those that span the lipid bilayer, and can be bitopic, spanning across the membrane once, or polytopic, spanning across it more than once. Lipid-anchored proteins are those which are covalently attached to lipids embedded in the lipid bilayer. For example, GPI, or glycosylphosphatidylinositol, is a glycolipid that gets attached to a protein’s C-terminus during post-translational modification. It acts as an anchor for proteins to the outer leaflet of the plasma membrane. Both integral and peripheral proteins can be post-translationally modified (e.g. fatty acids, diacylglycerol, prenyl chains, or GPI).
Recall that cellular membranes are made up of a phospholipid bilayer, which consists of two leaflets of phospholipids. These phospholipids have polar heads which are hydrophilic, or water-loving, and non-polar fatty acyl tails that are hydrophobic, or water-hating. Polar substances like to interact with other polar substances and non-polar substances hang out with other non-polar substances. This really attests to the power of hydrogen bonding. Water molecules want to interact so badly that anything non-polar getting in the way of their hydrogen bonding results in decreased entropy. The result is what’s called the hydrophobic effect. Hence, phospholipids in water will spontaneously form lipid bilayers – minimizes contact between polar and nonpolar molecules, maximizes hydrogen bonding, and maximizes entropy.
This is also why transmembrane proteins are amphipathic – which means that they have regions which are hydrophilic and regions that are hydrophobic. The hydrophilic regions are exposed to water on either side of the membrane, while the hydrophobic bits are happily interacting with the hydrophobic tails of lipid molecules in the interior of the bilayer. As a result, transmembrane proteins are stuck permanently into the cell membrane and are very hard to isolate. To get them out, you need to add a detergent, which is amphipathic and will disrupt the lipid bilayer.
There are two basic types of transmembrane proteins: α-helical proteins, and β-barrel proteins. Note that while helix bundle proteins are found in all types of biological membranes, beta-barrel proteins are only found in the outer membranes of gram-negative bacteria, mitochondria, and chloroplasts – evidence for the endosymbiotic theory.
Transmembrane protein structure can be predicted using a hydropathy plot - hydrophobicity index on Y axis, amino acid number on X axis. The amino acids making up a protein are localized according to polarity within its final structure in such a way that the polar amino acids face the outside aqueous solutions and the nonpolar amino acids are adjacent to the lipid bilayer.
Transmembrane proteins can be classified by topology - based on the position of N- and C-termini, as well as start-transfer and stop-transfer sequences. Type I is a single transmembrane pass with the N-terminus on the extracellular side of the membrane. Type 2 is also a single transmembrane pass but the N-terminus is on the cytosolic side of the membrane.
Often, transmembrane proteins function as gateways, allowing specific substances to pass across the membrane. They can undergo conformational changes as they do this. They might participate in facilitated or active transport. Facilitated transport is spontaneous passive transport of substa nces via transmembrane proteins. Active transport requires energy and may be necessary, for instance, if a substance is being carried across the membrane against its chemical or electrical gradient.
In animal cells, most transmembrane proteins are glycosylated. These sugar residues are always present on the noncytosolic leaflet of the membrane. As a result, the cell surface is covered in carbohydrates, which form what’s called the “cell coat”.
Membrane transport protein
A membrane transport protein (or simply transporter) is a membrane protein involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. These mechanisms of action are known as carrier-mediated transport.
Difference between protein channels and protein carriers
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Membrane_transport_protein
7:12
Transport Proteins: Pumps, Channels, Carriers
📝Find notes here: https://www.nonstopneuron.com/post/cell-membrane-transport-proteins
Expl...
published: 01 Aug 2021
Transport Proteins: Pumps, Channels, Carriers
Transport Proteins: Pumps, Channels, Carriers
- Report rights infringement
- published: 01 Aug 2021
- views: 186646
📝Find notes here: https://www.nonstopneuron.com/post/cell-membrane-transport-proteins
Explore our entire animation video library at: https://www.nonstopneuron.com/
Video Summary:
Transport proteins create a passage for lipid insoluble and larger molecules to cross the biological membrane. They can be pumps, channels or carriers. Pumps use energy from ATP to drive the primary active transport of a substance against its electrochemical gradient. Channels provide continuous passage for passive diffusion down the electrochemical gradient. Diffusion through channels is faster as multiple ions can pass through the channel during each opening. Pores are always open and gated channels switch between open and closed states. Carriers do not provide continuous passage. Movement through them is relatively slow. Uniporters move a single type of substance down its concentration gradient. Symporter moves one substance downhill and uses it's energy to move other substance uphill in same direction. Antiporters also move one substance downhill and uses it's energy to move other substance uphill but in opposite direction.
🎞 More videos on membrane transport
• Primary vs Secondary Active Transport: https://youtu.be/N-iBdwtQn4Q
• Transport Through The Cell Membrane: https://youtu.be/Vog-NMBNBKo
● Follow me at:
• Facebook: https://www.facebook.com/NonstopNeuron
• Instagram: https://www.instagram.com/NonstopNeuron/
Dr Vipul Navadiya
DISCLAIMER: This video is for education purposes only. Although every effort is made to ensure the accuracy of the material, viewers should refer to the appropriate regulatory body/authorized websites, guidelines, and other suitable sources of information as deemed relevant and applicable. In view of the possibility of human error or changes in medical science, any person or organization involved in the preparation of this work accepts no responsibility for any errors or omissions, or results obtained from the use of information in this video.
0:22
Kinesin protein walking on microtubule
Kinesin protein walking on a microtubule in a cell
published: 17 Aug 2012
Kinesin protein walking on microtubule
Kinesin protein walking on microtubule
- Report rights infringement
- published: 17 Aug 2012
- views: 1759029
Kinesin protein walking on a microtubule in a cell
7:50
Cell Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video...
published: 24 Jun 2016
Cell Transport
Cell Transport
- Report rights infringement
- published: 24 Jun 2016
- views: 6236903
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
0:51
Membrane Transport Proteins
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in ...
published: 03 Oct 2018
Membrane Transport Proteins
Membrane Transport Proteins
- Report rights infringement
- published: 03 Oct 2018
- views: 10583
A membrane transport protein (or simply transporter) is a membrane protein[1] involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across which they transport substances. The proteins may assist in the movement of substances by facilitated diffusion or active transport. The two main types of proteins involved in such transport are broadly categorized as either channels or carriers. The solute carriers and atypical SLCs[2] are secondary active or facilitative transporters in humans.[3][4]
Contents
1 Difference between channels and carriers
2 Active diffusion
3 Facilitated diffusion
4 Reverse diffusion
5 Types
5.1 1: Channels/pores
5.2 2: Electrochemical potential-driven transporters
5.3 3: Primary active transporters
5.4 4: Group translocators
5.5 5: Electron carriers
6 Examples
7 Pathology
8 See also
9 References
10 External links
Difference between channels and carriers
A carrier is not open simultaneously to both the extracellular and intracellular environments. Either its inner gate is open, or outer gate is open. In contrast, a channel can be open to both environments at the same time, allowing the molecules to diffuse without interruption. Carriers have binding sites, but pores and channels do not.[5][6][7] When a channel is opened, millions of ions can pass through the membrane per second, but only 100 to 1000 molecules typically pass through a carrier molecule in the same time.[8] Each carrier protein is designed to recognize only one substance or one group of very similar substances. Research has correlated defects in specific carrier proteins with specific diseases.[9]
Active diffusion
Main article: Active transport
The action of the sodium-potassium pump is an example of primary active transport. The two carrier proteins on the left are using ATP to move sodium out of the cell against the concentration gradient. The proteins on the right are using secondary active transport to move potassium into the cell.
Active transport is the movement of a substance across a membrane against its concentration gradient. This is usually to accumulate high concentrations of molecules that a cell needs, such as glucose or amino acids. If the process uses chemical energy, such as adenosine triphosphate (ATP), it is called primary active transport. Secondary active transport involves the use of an electrochemical gradient, and does not use energy produced in the cell.[10] Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.[11] A carrier protein is required to move particles from areas of low concentration to areas of high concentration. These carrier proteins have receptors that bind to a specific molecule (substrate) needing transport. The molecule or ion to be transported (the substrate) must first bind at a binding site at the carrier molecule, with a certain binding affinity. Following binding, and while the binding site is facing the same way, the carrier will capture or occlude (take in and retain) the substrate within its molecular structure and cause an internal translocation so that the opening in the protein now faces the other side of the plasma membrane.[12] The carrier protein substrate is released at that site, according to its binding affinity there.
1:23:22
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor...
published: 22 Mar 2021
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
- Report rights infringement
- published: 22 Mar 2021
- views: 1074693
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below!
Outline (Contributed by Community Member Owen Dane Rosco):
00:00 - Intro and Overview
00:31 - Simple Diffusion
10:37 - Facilitated Diffusion
26:46 - Primary Active Transport
39:57 - Secondary Active Transport
57:09 - Vesicular Transport
57:42 - Pinocytosis
1:01:15 - Phagocytosis
1:07:44 - Receptor-Mediated Endocytosis
1:15:29 - Exocytosis
1:22:47 - Wrap-up
Join this channel to get access to perks:
https://www.youtube.com/channel/UC6QYFutt9cluQ3uSM963_KQ/join
APPAREL |
We are switching merchandise suppliers.
DONATE
PATREON | https://www.patreon.com/NinjaNerdScience
PAYPAL | https://www.paypal.com/paypalme/ninjanerdscience
SOCIAL MEDIA
FACEBOOK | https://www.facebook.com/NinjaNerdlectures
INSTAGRAM | https://www.instagram.com/ninjanerdlectures
TWITTER | https://twitter.com/ninjanerdsci
@NinjaNerdSci
DISCORD | https://discord.gg/3srTG4dngW
#ninjanerd #MembraneTransport #CellBiology
11:45
In Da Club - Membranes & Transport: Crash Course Biology #5
Hank describes how cells regulate their contents and communicate with one another via mech...
published: 27 Feb 2012
In Da Club - Membranes & Transport: Crash Course Biology #5
In Da Club - Membranes & Transport: Crash Course Biology #5
- Report rights infringement
- published: 27 Feb 2012
- views: 5870981
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
5:14
A Day in the Life of a Motor Protein
The primary aim of the Hoogenraad research lab at the University of Utrecht, the Netherlan...
published: 19 Oct 2013
A Day in the Life of a Motor Protein
A Day in the Life of a Motor Protein
- Report rights infringement
- published: 19 Oct 2013
- views: 2828739
The primary aim of the Hoogenraad research lab at the University of Utrecht, the Netherlands, is to understand how intracellular protein transport underlies the development and function of nerve cells. During this 5 min movie we follow John, a motor protein, who has to transport his package to the right destination in the nerve cell, illustrating the relevance and mechanisms of proper intracellular transport in the nervous system.
http://cellbiology.science.uu.nl
http://NCUtrecht.nl
http://redrumbureau.nl
Permission to use this video is not required. When you use our materials in print, on the Web or in a video or audio format, we simply request that you credit the "Hoogenraad lab at the Utrecht University" and refer to our website at http://cellbiology.science.uu.nl
0:23
Kinesin Motor Protein 3D Animation (with Labels)
3D Medical Animation by John Liebler – Kinesin Motor Protein “walking” along a microtubule...
published: 16 Feb 2023
Kinesin Motor Protein 3D Animation (with Labels)
Kinesin Motor Protein 3D Animation (with Labels)
- Report rights infringement
- published: 16 Feb 2023
- views: 68233
3D Medical Animation by John Liebler – Kinesin Motor Protein “walking” along a microtubule filament, transporting molecular cargo such as neurotransmitters from one part of the cell to another. (Posted on Facebook)
Art of the Cell: Medical & Scientific 3D Animation & Illustration @WaimuWaimu
Check out his channel, website, and social media
Also check out my biology playlist: https://youtube.com/playlist?list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE
The video depicts a kinesin motor protein pulling a vesicle full of cargo, such as proteins, across a microtubule filament. Eukaryotic cells contain many membrane-bound organelles, such as the Golgi apparatus, which the vesicles recognize with their membrane proteins and fuse into the target organelle's membrane.
How kinesin moves: https://youtu.be/YAva4g3Pk6k
More information on vesicle transport: The Mechanism of Vesicular Transport - The Cell - NCBI Bookshelf
Video on vesicle transport: https://youtu.be/ABGlD1vQG3s
Simulation of vesicle full of cargo: https://youtu.be/ugfAe0ovB8w
Videos on microtubules: https://www.youtube.com/watch?v=tO-W8mvBa78&list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE&index=40 |
https://youtu.be/YGU0uN_RAIo | https://www.youtube.com/watch?v=4BAGI6LbHeo&list=PLvQksHNDqkKQ1jfZsdMb3BmDGQD0t21EE&index=40 | https://youtu.be/-qV__tYb4c4
Music: "Dragon Fish" by @C418
1:03:52
Brahmastra series - CSIR NET Unit 1 Q&A Discussion
Welcome to the Brahmastra Series! Join us for a comprehensive session on CSIR NET Unit 1: ...
published: 19 Jun 2024
Brahmastra series - CSIR NET Unit 1 Q&A Discussion
Brahmastra series - CSIR NET Unit 1 Q&A Discussion
- Report rights infringement
- published: 19 Jun 2024
- views: 510
Welcome to the Brahmastra Series! Join us for a comprehensive session on CSIR NET Unit 1: Molecules and their Interaction Relevant to Biology with the highly esteemed Urmimala Mam. This session is designed to provide you with a deep understanding of the molecular foundations of biology, crucial for excelling in the CSIR NET exam.
🔍 What We Will Cover:
Biomolecules: Structure and function of carbohydrates, lipids, proteins, and nucleic acids.
Enzyme Kinetics: Mechanisms of enzyme action, Michaelis-Menten kinetics, and enzyme inhibition.
Bioenergetics: Concepts of thermodynamics in biological systems, ATP, and energy cycles.
Molecular Interactions: Types of chemical bonds and interactions, hydrophobic, hydrophilic, and Van der Waals forces.
Signal Transduction: Mechanisms of cell signaling and receptor-ligand interactions.
📝 Interactive Q&A:
Got questions or doubts? Urmimala Mam will be answering them live! This is your chance to clarify any uncertainties. Submit your questions in the chat, and we’ll address them during the session.
6:53
Structure Of The Cell Membrane: Active and Passive Transport
What is it that separates what's inside a cell from what's outside of a cell? Why, that's ...
published: 05 Sep 2016
Structure Of The Cell Membrane: Active and Passive Transport
Structure Of The Cell Membrane: Active and Passive Transport
- Report rights infringement
- published: 05 Sep 2016
- views: 771367
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look.
Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
Biology Tutorials: http://bit.ly/ProfDaveBio
Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1
Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2
Mathematics Tutorials: http://bit.ly/ProfDaveMaths
EMAIL► [email protected]
PATREON► http://patreon.com/ProfessorDaveExplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: https://amzn.to/2HtNpVH
Bookshop: https://bit.ly/39cKADM
Barnes and Noble: https://bit.ly/3pUjmrn
Book Depository: http://bit.ly/3aOVDlT
10:50
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
In this video we discuss the different ways how substances transport across a cell membran...
published: 15 Jan 2018
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
Cell Membrane Transport - Transport Across A Membrane - How Do Things Move Across A Cell Membrane
- Report rights infringement
- published: 15 Jan 2018
- views: 1106776
In this video we discuss the different ways how substances transport across a cell membrane, including facilitated diffusion, channel mediated diffusion, carrier mediated diffusion, simple diffusion, passive transport and active transport.
Transcript/Notes (partial)
Substances move into and out of a cell through several different processes called membrane transport. There are two main processes, passive transport processes and active transport processes. The main difference between the two is that passive processes do not require energy expenditure and active processes do require cells to expend energy.
Lets start by looking at the passive processes, which include simple diffusion, facilitated diffusion and osmosis.
Diffusion is the movement of a substance from where it has a high concentration to where it has a low concentration, or the tendency of a substance to spread out evenly over a given space.
Simple diffusion occurs with solutes that are small and non polar. By being non polar they can move in between the phosphoipid molecules that form the plasma membrane because the interior region of the membrane is non polar. Some of the materials that move by simple diffusion include the gases O2, CO2, and small fatty acids. So, if there is a higher concentration of oxygen O2 molecules outside of a cell, they can move down the concentration gradient, across the membrane without assistance, and into the cell as long as the concentration gradient exists.
The second type of diffusion is facilitated diffusion. This applies to solutes that are small and either charged or polar. Because these solutes are polar, the non polar phospholipid bilayer blocks them from passing through the membrane and into or out of the cell by simple diffusion. However, they can pass into and out of the cell with the assistance of plasma membrane proteins through a process called facilitated diffusion. There are two types of facilitated diffusion, channel mediated diffusion and carrier mediated diffusion. The difference between the two is the type of transport protein used to move the substance across the membrane.
Channel mediated diffusion is when a ion, which is a charged particle where its total number of electrons does not equal its total number of protons giving it a positive or negative charge, moves across the membrane through a water filled protein channel. Each protein channel is typically specific for one type of ion, and there are two types of channels, a leak channel, which is continuously open, and a gated channel, which only opens due to a stimulus, and only stays open for a fraction of a second.
Carrier mediated diffusion involves the movement of polar molecules such as simple sugars or simple carbohydrates and amino acids across the membrane. This is accomplished by a carrier protein, which actually changes shape in the process. For instance glucose binds to a carrier protein, which changes shape and moves the glucose molecule to the other side of the membrane.
Now for osmosis. Osmosis is the passive movement of water through a selectively permeable membrane. This occurs when there is a difference in concentration of water on either side of the membrane. This can happen in one of two ways, water can slip between the phospholipid molecules that make up the plasma membrane, or through integral protein water channels that are called aquaporins.
Now lets look at active processes. As stated earlier, active processes require the use of cellular energy for membrane transport. There are two types of active processes, active transport and vesicular transport. Active transport is the movement of a solute against its concentration gradient, or going from an area of low concentration to a place of higher concentration. Vesicular transport is the transport of large substances across the plasma membrane by a vesicle, which is a membrane bound sac filled with materials.
Active transport has two types, primary active transport and secondary active transport.
In primary active transport cellular protein pumps called ion pumps move ions across the membrane, against their concentration gradient.
Timestamps
0:00 The structure of cell membranes
0:42 The 2 main membrane transport processes (passive and active)
1:12 What is diffusion?
2:11 Simple diffusion
3:05 Facilitated diffusion
3:44 Channel mediated diffusion
4:29 Carrier mediated diffusion
4:51 What is osmosis?
5:49 Active processes
6:01 Active transport
6:12 Vesicular transport
6:28 Primary active transport
7:27 Secondary active transport
8:37 The 2 types of vesicular transport
8:53 Exocytosis
9:23 Endocytosis
7:50
Cell Transport
Explore the types of passive and active cell transport with the Amoeba Sisters! This video...
published: 24 Jun 2016
Cell Transport
Cell Transport
- Report rights infringement
- published: 24 Jun 2016
- views: 6236903
Explore the types of passive and active cell transport with the Amoeba Sisters! This video has a handout here: http://www.amoebasisters.com/handouts.html Expand video details for table of contents 👇
Table of Contents:
Intro 00:00
Importance of Cell Membrane for Homeostasis 0:41
Cell Membrane Structure 1:07
Simple Diffusion 1:45
What does it mean to "go with the concentration gradient?" 2:20
Facilitated Diffusion 2:38
Active Transport 4:53 (including endocytosis 5:36 exocytosis 6:36)
Transport types covered include simple diffusion, facilitated diffusion, endocytosis, and exocytosis.
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
REFERENCE:
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
--------------------------------------------------------------------
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: http://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
UPDATE: We have videos dubbed in Spanish and Portuguese using an artificial voice via https://aloud.area120.google.com to increase accessibility. See our Amoeba Sisters en Español channel https://www.youtube.com/channel/UC1Njo3LBy53cOPngz6ArV8Q and Amoeba Sisters em Português https://www.youtube.com/channel/UCYTQPX2X_mXe0ZMPi0fXxbg Want to help translate our subtitles in any language? Learn more here https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles
3:08
Membrane Transport, Animation
(USMLE topics) Cell transport: permeability of the cell membrane to various molecules, typ...
published: 08 May 2018
Membrane Transport, Animation
Membrane Transport, Animation
- Report rights infringement
- published: 08 May 2018
- views: 242236
(USMLE topics) Cell transport: permeability of the cell membrane to various molecules, types of ion channels and transporters.
Purchase a license to download a non-watermarked version of this video on AlilaMedicalMedia(dot)com
Check out our new Alila Academy - AlilaAcademy(dot)com - complete video courses with quizzes, PDFs, and downloadable images.
©Alila Medical Media. All rights reserved.
Voice by: Ashley Fleming
All images/videos by Alila Medical Media are for information purposes ONLY and are NOT intended to replace professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.
All animal cells are enclosed in a plasma membrane, which consists of 2 layers of phospholipids. The hydrophobic nature of the cell membrane makes it intrinsically permeable to small NON-polar and uncharged polar molecules, but NON-permeable to large polar molecules and CHARGED particles. Charged particles, such as ions, must use special channels to move through the membrane.
Transport of a molecule can be passive or active. PASSIVE transport does NOT require energy input because it moves the molecules “DOWNHILL”, for example, from HIGHER to LOWER concentration. ACTIVE transport, on the other hand, moves the molecules AGAINST their gradients and therefore requires ENERGY expenditure.
Ion channels permit PASSIVE transport of ions. These are transmembrane proteins that form PORES for ions to pass through. Most ion channels are SPECIFIC for a certain type of ion.
Ion channels can be classified by how they change their OPEN-CLOSED state in RESPONSE to different factors of the environment. Common types of ion channels include:
- LEAK channels: these channels are almost always OPEN allowing more or less steady flow of ions; examples are potassium and sodium leak channels in neurons.
- LIGAND-gated ion channels: these channels OPEN upon BINDING of a LIGAND. They are most commonly found at synapses, where neurons communicate via chemical messages, or neurotransmitters. An example is the GABA receptor, a chloride channel located on POST-synaptic neurons. It OPENS upon binding to GABA, a neurotransmitter released by the PRE-synaptic neuron, and allows chloride ions to flow into the cell.
- VOLTAGE-gated ion channels: these channels are REGULATED by membrane voltage. They OPEN at some values of the membrane potential and CLOSE at others. These are the channels that underlie ACTION POTENTIALS in neurons and cardiac muscles.
ACTIVE transport of ions is carried out by ion transporters, or ion PUMPS. These are transmembrane proteins that PUMP ions AGAINST their concentration gradient using cellular ENERGY, such as ATP. Most notable example is the sodium-potassium pump which maintains the resting potential in neurons by pumping two potassium IN and three sodium OUT of the cell.
Another type of ion transporters, known as SECONDARY transporters, do NOT use ATP directly. Instead, they move ONE ion DOWN its concentration gradient and use THAT ENERGY to POWER the transport of a SECOND ion. Symporters transport the two ions in the same direction, while antiporters pump the coupled molecule in the OPPOSITE direction.
6:53
Structure Of The Cell Membrane: Active and Passive Transport
What is it that separates what's inside a cell from what's outside of a cell? Why, that's ...
published: 05 Sep 2016
Structure Of The Cell Membrane: Active and Passive Transport
Structure Of The Cell Membrane: Active and Passive Transport
- Report rights infringement
- published: 05 Sep 2016
- views: 771367
What is it that separates what's inside a cell from what's outside of a cell? Why, that's the cell membrane. What's it made out of? How does it work? How do molecules get in and out of the cell? These are super-important concepts! Let's take a look.
Watch the whole Biochemistry playlist: http://bit.ly/ProfDaveBiochem
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
Biology Tutorials: http://bit.ly/ProfDaveBio
Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1
Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2
Mathematics Tutorials: http://bit.ly/ProfDaveMaths
EMAIL► [email protected]
PATREON► http://patreon.com/ProfessorDaveExplains
Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!
Amazon: https://amzn.to/2HtNpVH
Bookshop: https://bit.ly/39cKADM
Barnes and Noble: https://bit.ly/3pUjmrn
Book Depository: http://bit.ly/3aOVDlT
11:45
In Da Club - Membranes & Transport: Crash Course Biology #5
Hank describes how cells regulate their contents and communicate with one another via mech...
published: 27 Feb 2012
In Da Club - Membranes & Transport: Crash Course Biology #5
In Da Club - Membranes & Transport: Crash Course Biology #5
- Report rights infringement
- published: 27 Feb 2012
- views: 5870981
Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.
"Concert" music used with permission from Chameleon Circuit.
This video uses sounds from Freesound.org
Table of Contents time codes:
1) Passive Transport - 1:17
2) Diffusion - 1:25
3) Osmosis - 2:12
4) Channel Proteins- 4:37
5) Active Transport - 4:58
6) ATP - 5:37
7) Transport Proteins - 6:19
8) Biolography - 6:37
9) Vesicular Transport - 9:02
10) Exocytosis - 9:21
11) Endocytosis - 9:50
12) Phagocytosis - 9:57
13) Pinocytosis - 10:29
14) Receptor-Mediated Endocytosis - 10:48
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashCourse
Twitter - http://www.twitter.com/TheCrashCourse
Instagram - https://www.instagram.com/thecrashcourse/
CC Kids: http://www.youtube.com/crashcoursekids
13:55
Cell Membrane Transport (Passive & Active) Diffusion, Osmosis, Hydrostatic Oncotic Pressure Colloid
Cell membrane transport: passive and active transport including simple diffusion, facilita...
published: 27 Jun 2023
Cell Membrane Transport (Passive & Active) Diffusion, Osmosis, Hydrostatic Oncotic Pressure Colloid
Cell Membrane Transport (Passive & Active) Diffusion, Osmosis, Hydrostatic Oncotic Pressure Colloid
- Report rights infringement
- published: 27 Jun 2023
- views: 112554
Cell membrane transport: passive and active transport including simple diffusion, facilitated diffusion, osmosis, active transport along with water and solute movement through capillary wall: hydrostatic and oncotic pressure (colloid osmotic pressure).
Forms of passive transport include: simple / facilitated diffusion and osmosis.
⭐Fluid and Electrolytes eBook: https://registerednursern.creator-spring.com/
Simple diffusion is the movement of solutes from a high concentration to a low concentration (requires no energy or help from channel proteins). Facilitated diffusion is like simple diffusion, but it uses channel proteins to move solutes.
Capillary wall quiz: https://www.registerednursern.com/fluid-movement-capillary-wall-quiz-oncotic-hydrostatic-pressure/
Cell transport quiz: https://www.registerednursern.com/cell-transport-quiz/
Notes: https://www.registerednursern.com/cell-membrane-transport-passive-active-hydrostatic-oncotic-pressure/
Osmosis is the movement of water from a high concentration of water to a low concentration of water, or in other words, water moves from a low solute concentration to a high solute concentration.
Active transport is a process that uses energy in the form of ATP to movement solutes from a low concentration to a high concentration gradient (against the concentration gradient) via channel protein proteins.
In order to movement water and solutes through the capillary wall, the body uses hydrostatic and oncotic pressure (also called colloidal osmotic pressure).
Hydrostatic pressure is the pushing effect on water through the capillary wall and leads to filtration. While oncotic pressure is the pulling effect on water through the capillary wall and helps keep water in the plasma (intravascular compartment). This process is highly influenced by albumin (a colloidal).
Website: https://www.registerednursern.com/
More Videos: https://www.youtube.com/watch?v=R2XMro13dD0&list=UUPyMN8DzkFl2__xnTEiGZ1w
Nursing Gear: https://teespring.com/stores/registerednursern
Instagram: https://www.instagram.com/registerednursern_com/
Facebook: https://www.facebook.com/RegisteredNurseRNs
Twitter: https://twitter.com/NursesRN
Popular Playlists:
NCLEX Reviews: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWtwCDmLHyX2UeHofCIcgo0
Fluid & Electrolytes: https://www.youtube.com/playlist?list=PLQrdx7rRsKfWJSZ9pL8L3Q1dzdlxUzeKv
Nursing Skills: https://www.youtube.com/playlist?list=PLQrdx7rRsKfUhd_qQYEbp0Eab3uUKhgKb
8:52
Membrane Transport
http://armandoh.org/
Facebook : http://www.facebook.com/ArmandoHasudungan
published: 03 Nov 2012
Membrane Transport
Membrane Transport
- Report rights infringement
- published: 03 Nov 2012
- views: 151335
http://armandoh.org/
Facebook : http://www.facebook.com/ArmandoHasudungan
1:23:22
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor...
published: 22 Mar 2021
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
Cell Biology | Passive & Active Transport | Endocytosis & Exocytosis
- Report rights infringement
- published: 22 Mar 2021
- views: 1074693
Official Ninja Nerd Website: https://ninjanerd.org
Ninja Nerds!
In this lecture Professor Zach Murphy will be teaching you about membrane transport mechanisms. These will include the normal physiology of simple diffusion, facilitated diffusion, primary active transport, secondary active transport, pinocytosis, phagocytosis, receptor mediated endocytosis, and exocytosis! We hope you enjoy this lecture and be sure to support us below!
Outline (Contributed by Community Member Owen Dane Rosco):
00:00 - Intro and Overview
00:31 - Simple Diffusion
10:37 - Facilitated Diffusion
26:46 - Primary Active Transport
39:57 - Secondary Active Transport
57:09 - Vesicular Transport
57:42 - Pinocytosis
1:01:15 - Phagocytosis
1:07:44 - Receptor-Mediated Endocytosis
1:15:29 - Exocytosis
1:22:47 - Wrap-up
Join this channel to get access to perks:
https://www.youtube.com/channel/UC6QYFutt9cluQ3uSM963_KQ/join
APPAREL |
We are switching merchandise suppliers.
DONATE
PATREON | https://www.patreon.com/NinjaNerdScience
PAYPAL | https://www.paypal.com/paypalme/ninjanerdscience
SOCIAL MEDIA
FACEBOOK | https://www.facebook.com/NinjaNerdlectures
INSTAGRAM | https://www.instagram.com/ninjanerdlectures
TWITTER | https://twitter.com/ninjanerdsci
@NinjaNerdSci
DISCORD | https://discord.gg/3srTG4dngW
#ninjanerd #MembraneTransport #CellBiology
59:32
Auricle's Exam Mastery Biochemistry Live Class about Plasma Protein by Dr. Abhijeet
🎓 Welcome to Auricle: Your Ultimate MBBS Learning Hub! 🩺
Explore More : https://linktr.ee...
published: 30 Jun 2024
Auricle's Exam Mastery Biochemistry Live Class about Plasma Protein by Dr. Abhijeet
Auricle's Exam Mastery Biochemistry Live Class about Plasma Protein by Dr. Abhijeet
- Report rights infringement
- published: 30 Jun 2024
- views: 44
🎓 Welcome to Auricle: Your Ultimate MBBS Learning Hub! 🩺
Explore More : https://linktr.ee/auricle_official
Instagram : https://bit.ly/3DdWtbE
Telegram : https://t.me/auricle1styearmbbs
Telegram : https://t.me/AuricleNEXTmbbs
First Time Ever! Auricle has come up with groundbreaking techniques which Customized specifically for Medicos which is Student Centric approach with Unmatched Excellence. At Auricle, we’re more than just an educational platform—we are your trusted medical companion.
Here’s what you receive after joining Auricle family :
🔬 Explore Recorded Classes to grasp complex concepts at your own pace.
📝 Test your knowledge with MCQs and access comprehensive Notes for thorough revision.
👨🔬 Join Practical Sessions to sharpen your clinical skills.
👩🏫 Benefit from our Mentorship Program and Personal Mentor for personalized guidance.
🌐Join our interactive live sessions, where you can ask questions, engage with peers, and learn from the best. 🖥🗣
📝 Prepare with Mock Tests and ace your exams with confidence.
❓ Stuck on a concept? Our experts are just a click away. Clear your doubts with Individual Doubt Sessions.
📚 Theory + Practical = Success: Engage with our Theory and Practical Examination modules for comprehensive preparation.
🖥 Join our Online Live Classes for interactive learning from anywhere.
🚀 Last-minute exam prep? Our crash courses simplify essential knowledge into power-packed sessions. 📅🚑
📱Download our App for easy access to all our resources and stay ahead in your MBBS journey!💼
Subscribe to our Youtube channel now and join Auricle Education! 🌟
#mbbs #mbbs students # neet #neetpg #neet pg #mbbsonlineclasses #onlinembbsclass #mbbs student life #best mbbs course #best mbbs live classes #youtube #subscriber #follow #like #comment #live #auriculate #auricle#Auriculate#Auricle#anatomy #physiology #medico #medical #medicalstudent #medical #medischool #medicine #stethoscopelover #doctor #medicos #medicos #médicoscubanos#medical #medicine #surgery#pharamacology#spm #entertainment #news #medinews#ophthalmology #newstatus #AWN#auriculateweeklynews#weekly
#auriculate #auriclate#auricle#Auriculate#Auricle#anatomy #physiology #medico #medical #medicalstudent #medical #medischool #medicine #stethoscopelover #doctor #medicos #medicos #médicoscubanos#medical #medicine #surgery#pharamacology#spm #entertainment #news #medinews#ophthalmology #newstatus #AWN#auriculateweeklynews#weekly
6:02
Osmosis | Membrane Transport
In this video, Dr Mike explains how osmosis is the movement of water through a semi-permea...
published: 28 May 2019
Osmosis | Membrane Transport
Osmosis | Membrane Transport
- Report rights infringement
- published: 28 May 2019
- views: 66479
In this video, Dr Mike explains how osmosis is the movement of water through a semi-permeable membrane.
Cell Membrane Transport - Transport Across A Membr...
Cell Transport...
Membrane Transport, Animation...
Structure Of The Cell Membrane: Active and Passive...
In Da Club - Membranes & Transport: Crash Course B...
Cell Membrane Transport (Passive & Active) Diffusi...
Membrane Transport...
Cell Biology | Passive & Active Transport | Endocy...
Auricle's Exam Mastery Biochemistry Live Class abo...