Pathophysiology 370 - Pathophysiology » Fall 2020 » Quiz DNA Replication
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Question #1
DNA is a polymer of:
A.
nucleotides
B.
nucleosides
C.
deoxyribose sugars connected by phosphodiester bonds
D.
saccharides
Question #2
Which of the following are purine bases?
A.
adenine and thymine
B.
adenine and cytosine
C.
adenine and guanine
D.
cytosine and guanine
Question #3
A nucleic acid was analyzed and found to contain 32 percent A, 18 percent G, 17 percent C, and 33 percent T. The nucleic acid must be:
A.
double-stranded DNA
B.
double-stranded RNA
C.
single-stranded RNA
D.
single-stranded DNA
Question #4
In the Meselson-Stahl experiment, which model of DNA replication was proven by the analysis of DNA isolated from bacteria one replication cycle after shifting from 15N to 14N medium?
A.
semi-conservative
B.
dispersive
C.
No answer text provided
D.
conservative
Question #5
Which of the following enzymes - in bacteria - is responsible for binding to the parental DNA and reading it in the 3' to 5' direction to create a complementary strand?
A.
DNA polymerase III
B.
Helicase
C.
DNA ligase
D.
Primase
Question #6
The percent of guanine in a double-stranded DNA is 14. What is the percent of adenine in that DNA?
A.
the answer cannot be calculated with the information given
B.
72%
C.
14%
D.
36%
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