Pathophysiology 370 - Pathophysiology » Fall 2020 » Quiz DNA Replication

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Question #1
DNA is a polymer of:
A.   nucleosides
B.   deoxyribose sugars connected by phosphodiester bonds
C.   saccharides
D.   nucleotides
Question #2
Which of the following are purine bases?
A.   adenine and cytosine
B.   adenine and guanine
C.   adenine and thymine
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 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.   No answer text provided
C.   conservative
D.   dispersive
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 ligase
B.   Helicase
C.   DNA polymerase III
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.   72%
B.   14%
C.   36%
D.   the answer cannot be calculated with the information given

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