-
Characteristics of eukaryotic cells | Cells | MCAT | Khan Academy
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video.
Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/eukaryotic-cells/v/the-nucleus?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
Missed the previous lesson? ht...
published: 27 Mar 2015
-
Eukaryotic Cells Part 1: Animal Cells and Endosymbiotic Theory
Prokaryotic cells were simple enough, but eukaryotic cells are much more complex! They have so many more little features and compartments, like the deluxe model of your car. We have to learn about every single one of these organelles and other components before we move on to other areas of biology, so let's take a tour of the eukaryotic cell, starting with animal cells!
Watch the whole Biology/Genetics playlist: http://bit.ly/ProfDaveBio
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
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Microbiology/Infectious Diseases Tutorials: http://bit.ly/ProfDav...
published: 13 Sep 2017
-
Prokaryotic Vs. Eukaryotic Cells
CLEAR AND SIMPLE- Understand the similarities and differences between prokaryotic and eukaryotic cells. Find more free tutorials, videos and readings for the science classroom at ricochetscience.com
published: 18 Jan 2015
-
Eukaryotic Transcription
Transcription in Eukaryotes, with mnemonics.
The enzyme required for the process of transcription is the RNA polymerase. The prokaryotes have only one RNA polymerase enzyme while the eukaryotes have three RNA polymerase enzyme. RNA polymease 2 is a major polymerase enzyme involved in (transcriotion of mRNA in the eukaryotes) the RNA pol 2 along with other proteins known as the transcription factors are required for the initiation of transcription. because there are many transcription factors involved in eukaryotic transcription, its easy to memorise them with the help of mnemonics. once RNA polymerase has initiated transcription it shifts into elongation phase. the transcription factors that helps in elongation are called elongation factors. And finally when the RNA polymerase reaches th...
published: 05 Sep 2019
-
The Eukaryotic Cells | Biology| MCAT
😍🖼Animated Mnemonics (Picmonic): https://www.picmonic.com/viphookup/medicosis/
- With Picmonic, get your life back by studying less and remembering more. Medical and Nursing students say that Picmonic is the most comprehensive and effective way to bridge learning and test prep...
Disclaimer: I use affiliate links....
►👨🏫💊Antibiotics Lectures: https://www.medicosisperfectionalis.com/products/courses/antibiotics/ ... Check out my brand new "Electrolytes" course at https://www.medicosisperfectionalis.com/products/course/electrolytes/ and use the PROMO code: ELECTROLYTES50 to get a 50% discount. ► Right Now! You can get access to all my hand-written hematology video notes (the notes that I use on my videos) on Patreon...There is a direct link through which you can view, download, print ...
published: 09 Oct 2018
-
Biology: Cell Structure I Nucleus Medical Media
Subscribe to the Nucleus Biology channel to see new animations on biology and other science topics, plus short quizzes to ace your next exam: https://bit.ly/3lH1CzV
For Employees of Hospitals, Schools, Universities and Libraries: Download 8 FREE medical animations from Nucleus by signing up for a free trial: http://nmal.nucleusmedicalmedia.com/free-trial-membership-b
This animation by Nucleus shows you the function of plant and animal cells for middle school and high school biology, including organelles like the nucleus, nucleolus, DNA (chromosomes), ribosomes, mitochondria, etc. Also included are ATP molecules, cytoskeleton, cytoplasm, microtubules, proteins, chloroplasts, chlorophyll, cell walls, cell membrane, cilia, flagellae, etc.
0:07 What is a cell?
0:35 What are the 2 categ...
published: 18 Mar 2015
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EUKARYOTIC CELLS vs PROKARYOTIC CELLS | What's the difference?
We hope you enjoyed this video! If you have any questions please ask in the comments.
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published: 20 Sep 2021
-
Eukaryotic Translation (Protein Synthesis), Animation.
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.
The translation process involves the following components:
- mRNA or messenger RNA containing the genetic information to be translated.
- tRNA or transfer RNA bringing in the amino acids – the building blocks of the protein.
- Ribosome – the machine that performs the translation. The ribosome has two subunits: small and large.
- Several initiation factors, elongation factors, and release factors. These factors assist with initiation, elongation and termination of the process, respectively.
Steps of the translation process:...
published: 26 Nov 2014
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Prokaryotic vs. Eukaryotic Cells (Updated)
This Amoeba Sisters video starts with providing examples of prokaryotes and eukaryotes before comparing and contrasting prokaryotic cells with eukaryotic cells! Free handout at https://www.amoebasisters.com/handouts. More detail about cell structure and organelles can be found in our cells video: https://youtu.be/8IlzKri08kk
Contents:
00:00 Intro
1:27 Modern Cell Theory
1:37 3 Domains (with examples of Prokaryotes and Eukaryotes)
2:23 Similarities of Prokaryotic Cells and Eukaryotic Cells
3:18 Differences of Prokaryotic Cells and Eukaryotic Cells
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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 ...
published: 30 Jul 2018
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Overview of the Eukaryotic Cell
In this video, Dr Mike outlines the different types of cells of the body and explains the various parts and components of a cell.
He highlights the 5 things you need to remember about the protoplasm!
published: 22 Mar 2021
8:54
Characteristics of eukaryotic cells | Cells | MCAT | Khan Academy
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT re...
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video.
Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/eukaryotic-cells/v/the-nucleus?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-theory/v/history-and-development-of-cell-theory?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.
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Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video.
Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/eukaryotic-cells/v/the-nucleus?utm_source=YT&utm_medium=Desc&utm_campaign=mcat
Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cell-theory/v/history-and-development-of-cell-theory?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: 27 Mar 2015
- views: 259309
14:56
Eukaryotic Cells Part 1: Animal Cells and Endosymbiotic Theory
Prokaryotic cells were simple enough, but eukaryotic cells are much more complex! They have so many more little features and compartments, like the deluxe model...
Prokaryotic cells were simple enough, but eukaryotic cells are much more complex! They have so many more little features and compartments, like the deluxe model of your car. We have to learn about every single one of these organelles and other components before we move on to other areas of biology, so let's take a tour of the eukaryotic cell, starting with animal cells!
Watch the whole Biology/Genetics playlist: http://bit.ly/ProfDaveBio
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https://wn.com/Eukaryotic_Cells_Part_1_Animal_Cells_And_Endosymbiotic_Theory
Prokaryotic cells were simple enough, but eukaryotic cells are much more complex! They have so many more little features and compartments, like the deluxe model of your car. We have to learn about every single one of these organelles and other components before we move on to other areas of biology, so let's take a tour of the eukaryotic cell, starting with animal cells!
Watch the whole Biology/Genetics playlist: http://bit.ly/ProfDaveBio
General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem
Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem
Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem
Anatomy & Physiology Tutorials: http://bit.ly/ProfDaveAnatPhys
Biopsychology Tutorials: http://bit.ly/ProfDaveBiopsych
Microbiology/Infectious Diseases Tutorials: http://bit.ly/ProfDaveMicrobio
Pharmacology Tutorials: http://bit.ly/ProfDavePharma
History of Drugs Videos: http://bit.ly/ProfDaveHistoryDrugs
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: 13 Sep 2017
- views: 138528
3:45
Prokaryotic Vs. Eukaryotic Cells
CLEAR AND SIMPLE- Understand the similarities and differences between prokaryotic and eukaryotic cells. Find more free tutorials, videos and readings for the s...
CLEAR AND SIMPLE- Understand the similarities and differences between prokaryotic and eukaryotic cells. Find more free tutorials, videos and readings for the science classroom at ricochetscience.com
https://wn.com/Prokaryotic_Vs._Eukaryotic_Cells
CLEAR AND SIMPLE- Understand the similarities and differences between prokaryotic and eukaryotic cells. Find more free tutorials, videos and readings for the science classroom at ricochetscience.com
- published: 18 Jan 2015
- views: 2610889
8:45
Eukaryotic Transcription
Transcription in Eukaryotes, with mnemonics.
The enzyme required for the process of transcription is the RNA polymerase. The prokaryotes have only one RNA pol...
Transcription in Eukaryotes, with mnemonics.
The enzyme required for the process of transcription is the RNA polymerase. The prokaryotes have only one RNA polymerase enzyme while the eukaryotes have three RNA polymerase enzyme. RNA polymease 2 is a major polymerase enzyme involved in (transcriotion of mRNA in the eukaryotes) the RNA pol 2 along with other proteins known as the transcription factors are required for the initiation of transcription. because there are many transcription factors involved in eukaryotic transcription, its easy to memorise them with the help of mnemonics. once RNA polymerase has initiated transcription it shifts into elongation phase. the transcription factors that helps in elongation are called elongation factors. And finally when the RNA polymerase reaches the end of the gene termination of transcription is carried out by termination factors.
https://wn.com/Eukaryotic_Transcription
Transcription in Eukaryotes, with mnemonics.
The enzyme required for the process of transcription is the RNA polymerase. The prokaryotes have only one RNA polymerase enzyme while the eukaryotes have three RNA polymerase enzyme. RNA polymease 2 is a major polymerase enzyme involved in (transcriotion of mRNA in the eukaryotes) the RNA pol 2 along with other proteins known as the transcription factors are required for the initiation of transcription. because there are many transcription factors involved in eukaryotic transcription, its easy to memorise them with the help of mnemonics. once RNA polymerase has initiated transcription it shifts into elongation phase. the transcription factors that helps in elongation are called elongation factors. And finally when the RNA polymerase reaches the end of the gene termination of transcription is carried out by termination factors.
- published: 05 Sep 2019
- views: 573576
7:02
The Eukaryotic Cells | Biology| MCAT
😍🖼Animated Mnemonics (Picmonic): https://www.picmonic.com/viphookup/medicosis/
- With Picmonic, get your life back by studying less and remembering more. Medi...
😍🖼Animated Mnemonics (Picmonic): https://www.picmonic.com/viphookup/medicosis/
- With Picmonic, get your life back by studying less and remembering more. Medical and Nursing students say that Picmonic is the most comprehensive and effective way to bridge learning and test prep...
Disclaimer: I use affiliate links....
►👨🏫💊Antibiotics Lectures: https://www.medicosisperfectionalis.com/products/courses/antibiotics/ ... Check out my brand new "Electrolytes" course at https://www.medicosisperfectionalis.com/products/course/electrolytes/ and use the PROMO code: ELECTROLYTES50 to get a 50% discount. ► Right Now! You can get access to all my hand-written hematology video notes (the notes that I use on my videos) on Patreon...There is a direct link through which you can view, download, print and enjoy! Go to https://www.patreon.com/medicosis If you like my videos, please consider leaving a tip at https://www.paypal.me/perfectionalis/
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https://wn.com/The_Eukaryotic_Cells_|_Biology|_Mcat
😍🖼Animated Mnemonics (Picmonic): https://www.picmonic.com/viphookup/medicosis/
- With Picmonic, get your life back by studying less and remembering more. Medical and Nursing students say that Picmonic is the most comprehensive and effective way to bridge learning and test prep...
Disclaimer: I use affiliate links....
►👨🏫💊Antibiotics Lectures: https://www.medicosisperfectionalis.com/products/courses/antibiotics/ ... Check out my brand new "Electrolytes" course at https://www.medicosisperfectionalis.com/products/course/electrolytes/ and use the PROMO code: ELECTROLYTES50 to get a 50% discount. ► Right Now! You can get access to all my hand-written hematology video notes (the notes that I use on my videos) on Patreon...There is a direct link through which you can view, download, print and enjoy! Go to https://www.patreon.com/medicosis If you like my videos, please consider leaving a tip at https://www.paypal.me/perfectionalis/
► Visit my website: https://www.medicosisperfectionalis.com/ My Favorite Productivity App: https://airtable.com/invite/r/2zH40fus/ 📱Save on your mobile phone bill: http://fbuy.me/q6bMj 🏦 Qbank (TrueLearn): https://truelearn.referralrock.com/l/MEDICOSIS/
- published: 09 Oct 2018
- views: 36831
7:22
Biology: Cell Structure I Nucleus Medical Media
Subscribe to the Nucleus Biology channel to see new animations on biology and other science topics, plus short quizzes to ace your next exam: https://bit.ly/3lH...
Subscribe to the Nucleus Biology channel to see new animations on biology and other science topics, plus short quizzes to ace your next exam: https://bit.ly/3lH1CzV
For Employees of Hospitals, Schools, Universities and Libraries: Download 8 FREE medical animations from Nucleus by signing up for a free trial: http://nmal.nucleusmedicalmedia.com/free-trial-membership-b
This animation by Nucleus shows you the function of plant and animal cells for middle school and high school biology, including organelles like the nucleus, nucleolus, DNA (chromosomes), ribosomes, mitochondria, etc. Also included are ATP molecules, cytoskeleton, cytoplasm, microtubules, proteins, chloroplasts, chlorophyll, cell walls, cell membrane, cilia, flagellae, etc.
0:07 What is a cell?
0:35 What are the 2 categories of cells?
1:22 What is an Organelle? DNA, Chromatin, Chromosomes
2:06 Organelles: Ribosomes, Endoplasmic Reticulum
2:59 Organelles: ER function, Vesicles, Golgi Body (Apparatus)
3:50 Organelles: Vacuole, Lysosome, Mitochondrion
4:45 Organelles: Cytoskeleton
5:04 Plant Cell Chloroplast, Cell Wall
5:43 Unique Cell Structures: Cilia
Watch another version of this video, narrated by biology teacher Joanne Jezequel here: https://youtu.be/cbiyKH9uPUw
#cell #nucleus #biology
----
Watch other Nucleus Biology videos:
- Controlled Experiments: https://youtu.be/D3ZB2RTylR4
- Independent vs. Dependent Variables: https://youtu.be/nqj0rJEf3Ew
- Active Transport: https://youtu.be/ufCiGz75DAk
----
Learn more about the company that created this video: http://www.nucleusmedicalmedia.com/
https://www.instagram.com/nucleusmedicalmedia
This animation won a Platinum Best of Show Aurora Award in 2016.
https://wn.com/Biology_Cell_Structure_I_Nucleus_Medical_Media
Subscribe to the Nucleus Biology channel to see new animations on biology and other science topics, plus short quizzes to ace your next exam: https://bit.ly/3lH1CzV
For Employees of Hospitals, Schools, Universities and Libraries: Download 8 FREE medical animations from Nucleus by signing up for a free trial: http://nmal.nucleusmedicalmedia.com/free-trial-membership-b
This animation by Nucleus shows you the function of plant and animal cells for middle school and high school biology, including organelles like the nucleus, nucleolus, DNA (chromosomes), ribosomes, mitochondria, etc. Also included are ATP molecules, cytoskeleton, cytoplasm, microtubules, proteins, chloroplasts, chlorophyll, cell walls, cell membrane, cilia, flagellae, etc.
0:07 What is a cell?
0:35 What are the 2 categories of cells?
1:22 What is an Organelle? DNA, Chromatin, Chromosomes
2:06 Organelles: Ribosomes, Endoplasmic Reticulum
2:59 Organelles: ER function, Vesicles, Golgi Body (Apparatus)
3:50 Organelles: Vacuole, Lysosome, Mitochondrion
4:45 Organelles: Cytoskeleton
5:04 Plant Cell Chloroplast, Cell Wall
5:43 Unique Cell Structures: Cilia
Watch another version of this video, narrated by biology teacher Joanne Jezequel here: https://youtu.be/cbiyKH9uPUw
#cell #nucleus #biology
----
Watch other Nucleus Biology videos:
- Controlled Experiments: https://youtu.be/D3ZB2RTylR4
- Independent vs. Dependent Variables: https://youtu.be/nqj0rJEf3Ew
- Active Transport: https://youtu.be/ufCiGz75DAk
----
Learn more about the company that created this video: http://www.nucleusmedicalmedia.com/
https://www.instagram.com/nucleusmedicalmedia
This animation won a Platinum Best of Show Aurora Award in 2016.
- published: 18 Mar 2015
- views: 30726079
1:55
EUKARYOTIC CELLS vs PROKARYOTIC CELLS | What's the difference?
We hope you enjoyed this video! If you have any questions please ask in the comments.
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🖥 Visit Our Website ➜ ...
We hope you enjoyed this video! If you have any questions please ask in the comments.
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We hope you enjoyed this video! If you have any questions please ask in the comments.
⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎⬇︎
🖥 Visit Our Website ➜ https://ilearneasy.co.uk
📝 Access Free Resources ➜ https://ilearneasy.co.uk/resources/
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📧 Contact Us ➜ https://ilearneasy.co.uk/contact-ilearneasy/
- published: 20 Sep 2021
- views: 232759
3:50
Eukaryotic Translation (Protein Synthesis), Animation.
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 - co...
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.
The translation process involves the following components:
- mRNA or messenger RNA containing the genetic information to be translated.
- tRNA or transfer RNA bringing in the amino acids – the building blocks of the protein.
- Ribosome – the machine that performs the translation. The ribosome has two subunits: small and large.
- Several initiation factors, elongation factors, and release factors. These factors assist with initiation, elongation and termination of the process, respectively.
Steps of the translation process:
Initiation (eukaryotes) : The small ribosomal subunit binds to the initiator tRNA carrying the initiator amino acid methionine. This complex then attaches to the cap structure at the 5’ end of an mRNA and scans for the start codon AUG. The process is mediated by several initiation factors. At the start codon, the large ribosomal subunit joins the complex and all initiation factors are released. The ribosome has three sites: the A-site is the entry site for new tRNA charged with amino-acid or aminoacyl-tRNA; the P-site is occupied by peptidyl-tRNA - the tRNA that carries the growing polypeptide chain; the E-site is the exit site for the tRNA after it’s done delivering the amino acid. The initiator tRNA is positioned in the P-site.
Elongation: A new tRNA carrying an amino acid enters the A-site of the ribosome. On the ribosome, the anticodon of the incoming tRNA is matched against the mRNA codon positioned in the A-site. During this proof-reading, tRNA with incorrect anticodons are rejected and replaced by new tRNA that are again checked. When the right aminoacyl-tRNA enters the A-site, a peptide bond is made between the two now-adjacent amino-acids. As the peptide bond is formed, the tRNA in the P-site releases the amino-acids onto the tRNA in the A-site and becomes empty. At the same time, the ribosome moves one triplet forward on the mRNA. As a result, the empty tRNA is now in the E-site and the peptidyl tRNA is in the P-site. The A-site is now unoccupied and is ready to accept a new tRNA. The cycle is repeated for each codon on the mRNA.
Termination: Termination happens when one of the three stop codons is positioned in the A-site. No tRNA can fit in the A-site at that point as there are no tRNA that match the sequence. Instead, these codons are recognized by a protein, a release factor. Binding of the release factor catalyzes the cleavage of the bond between the polypeptide and the tRNA. The polypeptide is released from the ribosome. The ribosome is disassociated into subunits and is ready for a new round of translation. The newly made polypeptide usually requires additional modifications and folding before it can become an active protein.
https://wn.com/Eukaryotic_Translation_(Protein_Synthesis),_Animation.
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The translation process involves the following components:
- mRNA or messenger RNA containing the genetic information to be translated.
- tRNA or transfer RNA bringing in the amino acids – the building blocks of the protein.
- Ribosome – the machine that performs the translation. The ribosome has two subunits: small and large.
- Several initiation factors, elongation factors, and release factors. These factors assist with initiation, elongation and termination of the process, respectively.
Steps of the translation process:
Initiation (eukaryotes) : The small ribosomal subunit binds to the initiator tRNA carrying the initiator amino acid methionine. This complex then attaches to the cap structure at the 5’ end of an mRNA and scans for the start codon AUG. The process is mediated by several initiation factors. At the start codon, the large ribosomal subunit joins the complex and all initiation factors are released. The ribosome has three sites: the A-site is the entry site for new tRNA charged with amino-acid or aminoacyl-tRNA; the P-site is occupied by peptidyl-tRNA - the tRNA that carries the growing polypeptide chain; the E-site is the exit site for the tRNA after it’s done delivering the amino acid. The initiator tRNA is positioned in the P-site.
Elongation: A new tRNA carrying an amino acid enters the A-site of the ribosome. On the ribosome, the anticodon of the incoming tRNA is matched against the mRNA codon positioned in the A-site. During this proof-reading, tRNA with incorrect anticodons are rejected and replaced by new tRNA that are again checked. When the right aminoacyl-tRNA enters the A-site, a peptide bond is made between the two now-adjacent amino-acids. As the peptide bond is formed, the tRNA in the P-site releases the amino-acids onto the tRNA in the A-site and becomes empty. At the same time, the ribosome moves one triplet forward on the mRNA. As a result, the empty tRNA is now in the E-site and the peptidyl tRNA is in the P-site. The A-site is now unoccupied and is ready to accept a new tRNA. The cycle is repeated for each codon on the mRNA.
Termination: Termination happens when one of the three stop codons is positioned in the A-site. No tRNA can fit in the A-site at that point as there are no tRNA that match the sequence. Instead, these codons are recognized by a protein, a release factor. Binding of the release factor catalyzes the cleavage of the bond between the polypeptide and the tRNA. The polypeptide is released from the ribosome. The ribosome is disassociated into subunits and is ready for a new round of translation. The newly made polypeptide usually requires additional modifications and folding before it can become an active protein.
- published: 26 Nov 2014
- views: 1282221
5:28
Prokaryotic vs. Eukaryotic Cells (Updated)
This Amoeba Sisters video starts with providing examples of prokaryotes and eukaryotes before comparing and contrasting prokaryotic cells with eukaryotic cells!...
This Amoeba Sisters video starts with providing examples of prokaryotes and eukaryotes before comparing and contrasting prokaryotic cells with eukaryotic cells! Free handout at https://www.amoebasisters.com/handouts. More detail about cell structure and organelles can be found in our cells video: https://youtu.be/8IlzKri08kk
Contents:
00:00 Intro
1:27 Modern Cell Theory
1:37 3 Domains (with examples of Prokaryotes and Eukaryotes)
2:23 Similarities of Prokaryotic Cells and Eukaryotic Cells
3:18 Differences of Prokaryotic Cells and Eukaryotic Cells
Visit our Redbubble store at https://www.amoebasisters.com/store
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 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
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
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:
Hindi Subtitling Credit: Alisha Aggarwal
Spanish Subtitling Credit: Alena Goveas
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
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.
https://wn.com/Prokaryotic_Vs._Eukaryotic_Cells_(Updated)
This Amoeba Sisters video starts with providing examples of prokaryotes and eukaryotes before comparing and contrasting prokaryotic cells with eukaryotic cells! Free handout at https://www.amoebasisters.com/handouts. More detail about cell structure and organelles can be found in our cells video: https://youtu.be/8IlzKri08kk
Contents:
00:00 Intro
1:27 Modern Cell Theory
1:37 3 Domains (with examples of Prokaryotes and Eukaryotes)
2:23 Similarities of Prokaryotic Cells and Eukaryotic Cells
3:18 Differences of Prokaryotic Cells and Eukaryotic Cells
Visit our Redbubble store at https://www.amoebasisters.com/store
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 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
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
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:
Hindi Subtitling Credit: Alisha Aggarwal
Spanish Subtitling Credit: Alena Goveas
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
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.
- published: 30 Jul 2018
- views: 5123388
13:03
Overview of the Eukaryotic Cell
In this video, Dr Mike outlines the different types of cells of the body and explains the various parts and components of a cell.
He highlights the 5 things you...
In this video, Dr Mike outlines the different types of cells of the body and explains the various parts and components of a cell.
He highlights the 5 things you need to remember about the protoplasm!
https://wn.com/Overview_Of_The_Eukaryotic_Cell
In this video, Dr Mike outlines the different types of cells of the body and explains the various parts and components of a cell.
He highlights the 5 things you need to remember about the protoplasm!
- published: 22 Mar 2021
- views: 9804