After translocation occurs, the AUG codon will move into the A site. When a third amino acid is added on to the dipeptide chain, that reaction will be thermodynamically favorable.
After translocation occurs, the AUG codon will move into the A site. When a third amino acid is added on to the dipeptide chain, that reaction will be thermodynamically favorable.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Concept explainers
Proteins
We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.
Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
Question
Transcribed Image Text:### Ribosome and Protein Synthesis
The image provided demonstrates a key step in the process of protein synthesis within a ribosome. The figure shows the interaction between mRNA codons and tRNA anticodons, facilitating the addition of amino acids to the growing polypeptide chain. This is a crucial step in genetic translation.
#### Diagram Description
- **Ribosome:** The large, complex structure shown in pink represents the ribosome, divided into two subunits, the large and the small subunit.
- **mRNA:** The green strip at the bottom represents mRNA, which is being read by the ribosome. Visible codons include the start codon "AUG".
- **tRNA:** Two tRNA molecules are shown within the ribosome. They are represented as yellow ovals with attached blue amino acids (Met and Ala).
- **P Site:** The tRNA in the P site (Peptidyl site) has the anticodon "5'-UAC-3'" and is bound to methionine (Met).
- **A Site:** The tRNA in the A site (Aminoacyl site) is carrying an alanine (Ala) and is ready to add it to the growing peptide chain.
#### Questions and Explanations
**Which one of the following statements about this figure is true based on our coverage?**
- **After translocation occurs, the AUG codon will move into the A site.**
- **Explanation:** This statement is incorrect. The AUG codon typically remains in the P site after initiation.
- **When a third amino acid is added onto the dipeptide chain, that reaction will be thermodynamically favorable.**
- **Explanation:** This statement refers to the peptide bond formation, which is generally thermodynamically favorable.
- **The tRNA in the P-site has the anticodon 5'-UAC-3'.**
- **Explanation:** This is accurate; tRNA matches the mRNA codon "AUG" with its anticodon "5'-UAC-3'".
- **After translocation occurs, the tRNA that is in the P site will move into the A site.**
- **Explanation:** This statement is incorrect. Translocation moves the tRNA from the A site to the P site.
- **When a third amino acid is added onto the dipeptide chain, that third one will be added
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education