Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Free Tools

Explore our collection of AI-powered tools designed to boost your productivity.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing Schools Business

Features Free Tools Pricing Schools Business

5 Questions

0 Views

Termination Phase of Translation

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the role of release factors during the termination phase of translation?

They transport tRNAs to the ribosome.

They recognize stop codons and trigger hydrolysis, releasing the polypeptide chain. (correct)

They add amino acids to the growing polypeptide chain.

They initiate the binding of mRNA to the ribosome.

Which of the following events does NOT occur during the termination phase?

Separation of the ribosome into subunits.

Hydrolysis of the bond linking the polypeptide chain to tRNA.

Binding of release factors to the A site of the ribosome.

tRNA molecules carrying amino acids recognize stop codons. (correct)

Which of the following release factors binds to the stop codon UAG?

RF3

RF2

RF1 (correct)

All release factors

What is the role of RF3 in the termination phase?

<p>Facilitates the function of RF1 and RF2. (B)</p> Signup and view all the answers

What provides the energy required for the separation of the translation complex during termination?

<p>GTP (D)</p> Signup and view all the answers

Flashcards

Termination Phase

The phase where protein synthesis stops when a stop codon is reached.

Stop Codons

Codons (UAA, UGA, UAG) that signal the end of protein synthesis.

Release Factors (RFs)

Proteins that bind to stop codons to terminate translation.

RF1 and RF2

Specific release factors that recognize and bind to respective stop codons.

Signup and view all the flashcards

GTP in Termination

Energy source needed for the termination process in translation.

Signup and view all the flashcards

Study Notes

Termination Phase

Termination begins when a stop codon (UAA, UGA, or UAG) is reached.
Stop codons are not recognised by tRNA molecules.
Release Factors (RFs) bind to the A site of the ribosome.
RF1 binds to UAA and UAG.
RF2 binds to UAA and UGA.
RF3 facilitates the function of RF1 and RF2.
Ribosome disassembly occurs, releasing the polypeptide chain, tRNA, mRNA, and RFs.
GTP provides energy for this process.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers the termination phase of translation in protein synthesis. Key concepts include the recognition of stop codons, the role of release factors, and the disassembly of the ribosome. Test your understanding of how polypeptides are released in this vital biological process.