BIO 181 GRAND CANYON UNIVERSITY EXAM 3 QUESTIONS AND ANSWERS NEW UPDATE
1. A frameshift mutation could result from E) either an insertion or a deletion of
a base.
2. Which of the following does not occur in prokaryotic
eukaryotic gene expression, but does in eukaryotic
gene expression?
3. Which of the following helps to hold the DNA strands
apart while they are being replicated?
4. Accuracy in the translation of mRNA into the primary
structure of a polypeptide depends on specificity in
the
5. Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what
percentage of the nucleotides in this sample will be
thymine?
C) A poly-A tail is
added to the 3' end
of an mRNA and a
cap is added to the
5' end.
single-strand binding proteins
bonding of the
anticodon to the
codon and the attachment of amino
acids to tRNAs
8%
6. What is the function of DNA polymerase III? to add nucleotides
to the 3' end of
a growing DNA
strand
7. A new DNA strand elongates only in the 5' to 3' direction because
DNA polymerase
can only add nucleotides to the
free 3' end.
8. How do we describe transformation in bacteria? assimilation of external DNA into a
cell
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