DNA Structure and Replication – Section 3

6. For the DNA replication in eukaryotes, the cell cycle consists of

A. G1, G2 and M phases
B. S, G2 and M phases
C. G1,S, G2 and M phases
D. G2 and M phases

Correct Answer: C. G1,S, G2 and M phases

7. Which of the following in DNA replication and transcription are common?

A. incorporation of deoxynucleotides
B. utilization of the same enzyme
C. synthesis in the 5′-3′ direction
D. none of the above

Correct Answer: C. synthesis in the 5′-3′ direction

8. An important difference between eukaryotic and prokaryotic DNA replication is

A. eukaryotic DNA polymerases are faster
B. more DNA polymerases are found in eukaryotes
C. multiple origins of replication in eukaryotes
D. RNA primers are not required in eukaryotes

Correct Answer: C. multiple origins of replication in eukaryotes

9. In DNA, nucleotides are covalently joined together by

A. 3′, 5′ phosphodiester bonds to form a repetitive sugar-phosphate chain
B. 2′, 5′ phosphodiester bonds to form a repetitive sugar-phosphate chain
C. 2′, 3′ phosphodiester bonds to form a repetitive sugar-phosphate chain
D. 3′, 4′ phosphodiester bonds to form a repetitive sugar-phosphate chain

Correct Answer: A. 3′, 5′ phosphodiester bonds to form a repetitive sugar-phosphate chain

10. What is the name given to the points at which a DNA helix is unwound and new strands develop?

A. Replication origins
B. Replication forks
C. Leading strands
D. Okazaki fragments

Correct Answer: B. Replication forks

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