Exercise: Dna Structure And Replication

Questions for: Dna Structure And Replication

The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by
A:
using enzyme called telomerase
B:
shortening of the double stranded replicated portion
C:
using RNA as a template
D:
none of the above
Answer: A
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What is the approximate percentage of repetitive DNA sequences in human DNA?
A:
10 to 20%
B:
20 to 30%
C:
30 to 40%
D:
40 to 50%
Answer: B
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Deoxyribonucleoside triphosphates, being need in the chain termination methods are
A:
dATP
B:
dGTP and dCTP
C:
dTTP
D:
all of these
Answer: D
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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
Answer: D
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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
Answer: B
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