recognition of the AUG initiation codon in an mRNA is TRUE?

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,...
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QUESTION 13
Which of the following statements about the recognition of the AUG initiation codon in an mRNA is TRUE?
O A. In bacterial MRNAS, the ribosome scans from the 5' end and finds the first AUG. It assumes that AUG is
the correct initiation codon.
B. In bacterial mRNAS, the ribosome recognizes a 'Kozak' concensus sequence located at and around the
AUG initiation codon
O C. In eukaryotic MRNAS, a sequence called Shine-Delgarno positions the ribosome so that it can find the
correct AUG initiation codon.
O D. None of these answers are correct.
O E. In polycistronic bacterial MRNAS, the ribosome will bind at Shine Delgarno sequences that are just
upstream of each of the AUG initiation codons for the different proteins that are encoded by that
transcript.
Transcribed Image Text:QUESTION 13 Which of the following statements about the recognition of the AUG initiation codon in an mRNA is TRUE? O A. In bacterial MRNAS, the ribosome scans from the 5' end and finds the first AUG. It assumes that AUG is the correct initiation codon. B. In bacterial mRNAS, the ribosome recognizes a 'Kozak' concensus sequence located at and around the AUG initiation codon O C. In eukaryotic MRNAS, a sequence called Shine-Delgarno positions the ribosome so that it can find the correct AUG initiation codon. O D. None of these answers are correct. O E. In polycistronic bacterial MRNAS, the ribosome will bind at Shine Delgarno sequences that are just upstream of each of the AUG initiation codons for the different proteins that are encoded by that transcript.
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