Pathophysiology 370 - Pathophysiology » Fall 2020 » Quiz DNA Replication

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Question #1
DNA is a polymer of:
A.   saccharides
B.   nucleosides
C.   nucleotides
D.   deoxyribose sugars connected by phosphodiester bonds
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 RNA
B.   double-stranded DNA
C.   single-stranded DNA
D.   single-stranded RNA
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.   dispersive
B.   conservative
C.   No answer text provided
D.   semi-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.   Primase
C.   Helicase
D.   DNA ligase
Question #6
The percent of guanine in a double-stranded DNA is 14. What is the percent of adenine in that DNA?
A.   72%
B.   14%
C.   36%
D.   the answer cannot be calculated with the information given

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