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11751200
Bio 110 Final: Chapter 12
Description
Quiz on Bio 110 Final: Chapter 12, created by Christina Marshall on 13/12/2017.
Quiz by
Christina Marshall
, updated more than 1 year ago
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Christina Marshall
over 6 years ago
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Resource summary
Question 1
Question
Which of the following best represents the central dogma of gene expression?
Answer
During transcription, DNA codes for polypeptides.
During transcription, DNA codes for mRNA, which codes for polypeptides during translation
During translation, DNA codes for mRNA, which codes for polypeptide during transcription
none of the above
Question 2
Question
A mutation prevents a gene from being transcribed into an mRNA. The mutation most likely disrupts
Answer
the promoter
the terminator
the start codon
the stop codon
both a and c
Question 3
Question
The functional product of a structural gene is
Answer
tRNA
mRNA
rRNA
a polypeptide
a, b, and c.
Question 4
Question
Which of the following is not a property of the genetic code?
Answer
It specifies the amino acids within a polypeptide
It is composed of codons, which are specific sequences of three bases.
It has a start codon, which specifies the starting point for polypeptide synthesis.
It has stop codons, which specify the end of polypeptide synthesis,
It determines the rate of transcription.
Question 5
Question
If a eukaryotic mRNA failed to have a cap attached to it 5' end, what would the negative consequence(s) be?
Answer
The mRNA would not properly exit the nucleus
The mRNA would not properly bind to a ribosome
The mRMA would not receive a Poly A tail.
The mRNA would not use the correct start codon.
Both a and b are correct
Question 6
Question
The small subunit of a ribosome is composed of
Answer
a protein
an rRNA molecule
many proteins
many rRNA molecules
many proteins and one rRNA molecule
Question 7
Question
The part of a tRNA that is complementary to a codon in an mRNA is the
Answer
acceptor stem
codon
peptidyl site
anticodon
adaptor loop
Question 8
Question
During the initiation of translation, the first codon, ________, enters the ___________ and associates with the initiator tRNA.
Answer
UAG, A site
AUG, A site
UAG, P site
AUG, P site
AUG, E site
Question 9
Question
The movement of the polypeptide from the tRNA in the P site to the tRNA in the A site is referred to as
Answer
peptide bonding
aminoacyl binding
translation
the peptidyl transfer reaction
elongation
Question 10
Question
During which stage of translation does the synthesis of a polypeptide occur?
Answer
initiation
elongation
termination
splicing
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