DNA Structure and Replication – Section 2

1. Each replication bubbles consists of

A. 3 replication forks
B. 2 replication forks
C. 4 replication forks
D. 1 replication forks

Correct Answer: B. 2 replication forks

2. In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred to as

A. mutational
B. semiconservative
C. discontinuous
D. antiparallel

Correct Answer: B. semiconservative

3. In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

A. above DNA containing 14N
B. below DNA containing 14N
C. with 14N-containing DNA
D. all of these

Correct Answer: B. below DNA containing 14N

4. The role of primase is to

A. dismantle RNA primer
B. cleave and unwinds short sections of DNA ahead of the replication fork
C. proofread base pairing
D. synthesize an RNA primer to begin the elongation process

Correct Answer: D. synthesize an RNA primer to begin the elongation process

5. Deoxyribonucleoside triphosphates, being need in the chain termination methods are

A. dATP
B. dGTP and dCTP
C. dTTP
D. all of these

Correct Answer: D. all of these

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