Question

When the ribosome reaches a nonsense codon, which of the following occurs? a. a methionine is incorporated b. the polypeptide is released c. a peptide bond forms d. the A site binds to a charged tRNA

Name: Problem 15, Chapter 11: Microbiology
Uploaded: 2020-05-08T19:25:39-08:00
Duration: 1 min 27 s
Channel: Dennis Howard
Description: When the ribosome reaches a nonsense codon, which of the following occurs? a. a methionine is incorporated b. the polypeptide is released c. a peptide bond forms d. the A site binds to a charged tRNA

   When the ribosome reaches a nonsense codon, which of the following occurs?
a. a methionine is incorporated
b. the polypeptide is released
c. a peptide bond forms
d. the A site binds to a charged tRNA

Microbiology

Nina Parker, Mark… 1st Edition

Chapter 11, Problem 15

Instant Answer

Solved by Expert Dennis Howard

05/08/2020

Step 1

The question is asking what happens when a ribosome reaches a nonsense codon during the process of protein synthesis. Show more…

Show all steps

Thanks for your feedback!

When the ribosome reaches a nonsense codon, which of the following occurs? a. a methionine is incorporated b. the polypeptide is released c. a peptide bond forms d. the A site binds to a charged tRNA

Play audio

Feedback

Dennis Howard and 88 other subject Biology educators are ready to help you.

Ask a new question

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Release Factors

Release factors are proteins that recognize nonsense codons during translation termination. These factors facilitate the hydrolysis of the bond linking the polypeptide to the transfer RNA at the ribosome’s active site, thereby releasing the newly synthesized protein and ensuring proper termination of translation.

Nonsense Codon

A nonsense codon, often called a stop codon in the context of translation, is a specific sequence within mRNA that signals the ribosome to terminate protein synthesis. Unlike codons that encode amino acids, a nonsense codon does not specify an amino acid and instead prompts termination of translation.

Translation Termination

Translation termination is the process by which protein synthesis is concluded. When the ribosome encounters a nonsense codon on the mRNA, this process is initiated to stop further elongation of the polypeptide chain and prepare for the disassembly of the translation complex.

Please give Ace some feedback