Multiple Choice
In the context of translation, what is the primary function of ribosomes in a cell?
1
views
5. DNA to RNA to Protein
Translation
Struggling with Cell Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In translation, how does the ribosome know when to stop synthesizing a polypeptide?
A
The ribosome stops when the A site binds a tRNA carrying tryptophan, because tryptophan is the final amino acid in most proteins.
B
A stop codon (UAA, UAG, or UGA) enters the A site and is recognized by a release factor, which triggers hydrolysis of the polypeptide from the tRNA.
C
The ribosome stops when the Shine-Dalgarno sequence is reached, because it signals termination of elongation.
D
The ribosome stops when GTP is depleted, because elongation cannot proceed without GTP hydrolysis.
Related Videos
Related Practice
