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Biochemistry - DNA Structure and Replication

Exercise : DNA Structure and Replication - Section 2
21.
The melting of 40-45 bp at the oriC site of E. coli requires
DNA + ATP + HU
DNA + ATP + HU + DNAb
DNA+ ATP + HU + DNAb + DNAa
DNA + ATP + HU + DNAb + DNAa + Pol III holoenzyme
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Overwinding or overtightening of DNA during replication is caused and removed by
DNAb, DNA polymerase
DNAa, gyrase
DNAb, gyrase
Single stranded protein, DNAa
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
How does ethidium bromide interact with DNA?
It binds to adenine
It binds to phosphate
It intercalates between bases
It does not interact
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Number of times the two DNA strands are interwined in circular DNA and is known as
helix frequency
linking number
twisting number
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is
DNA polymerase
strandase
helicase
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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