17dos - 60) As a ribosome translocates along an mRNA...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
60) As a ribosome translocates along an mRNA molecule by one codon, which of the following occurs? A) The tRNA that was in the A site moves into the P site. B) The tRNA that was in the P site moves into the A site. C) The tRNA that was in the P site moves to the E site and is released. D) The tRNA that was in the A site departs from the ribosome. E) Both A and C are correct. Answer: E Topic: Concept 17.4 Skill: Knowledge 61) Which of the following does not occur during the termination phase of translation? A) A termination codon causes the A site to accept a release factor. B) The newly formed polypeptide is released. C) A tRNA with the next amino acid enters the P site. D) The two ribosomal subunits separate. E) Translation stops. Answer: C Topic: Concept 17.4 Skill: Knowledge 62) What are polyribosomes? A) groups of ribosomes reading a single mRNA simultaneously B) ribosomes containing more than two subunits C) multiple copies of ribosomes associated with giant chromosomes D) aggregations of vesicles containing ribosomal RNA E) ribosomes associated with more than one tRNA Answer: A Topic: Concept 17.4 Skill: Knowledge 63) What is one function of a signal peptide? A) to direct an mRNA molecule into the cisternal space of the ER B) to bind RNA polymerase to DNA and initiate transcription C) to terminate translation of the messenger RNA D) to translocate polypeptides across the ER membrane E) to signal the initiation of transcription
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/26/2011 for the course BIO 104 taught by Professor Smith during the Spring '11 term at Saddleback.

Page1 / 4

17dos - 60) As a ribosome translocates along an mRNA...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online