Exercise: Dna Structure And Replication

Questions for: Dna Structure And Replication

What is the main damaging effect of UV radiation on DNA?
A:
Depurination
B:
Formation of thymine dimers
C:
Single strand break
D:
Dehydration
Answer: B
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Proteins involved in opening a replication bubble are
A:
DNA helicases
B:
single stranded binding proteins
C:
ligase
D:
DNA topoisomerase
Answer: D
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What bands will be observed in a cesium chloride gradient after two rounds of replication?
A:
One light, one medium and one heavy band
B:
One light and one medium band
C:
One medium band
D:
One medium and one heavy band
Answer: B
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The nucleosome consists of histone
A:
octamer and 146 bp of DNA
B:
tetramer and 146 bp of DNA
C:
hexamer and 146 bp of DNA
D:
none of the above
Answer: A
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Which of the following would not contain DNA?
A:
Yeast
B:
Bacteria
C:
Glass crystals
D:
Mold
Answer: C
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