Dna Structure And Replication

Question: An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called
[A].

transposase

[B].

helicase

[C].

reverse transcriptase

[D].

restriction endonuclease

Answer: Option D

Explanation:

No answer description available for this question.

Question: In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as
[A].

mutational

[B].

semiconservative

[C].

discontinuous

[D].

antiparallel

Answer: Option B

Explanation:

No answer description available for this question.

Question: DNAs when charged, migrate in a gel towards the
[A].

positive pole

[B].

negative pole

[C].

will not migrate

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which will require a higher temperature to denature?
[A].

DNA with a high G-C content

[B].

DNA with a high A-T content

[C].

RNA with a high G-C content

[D].

RNA with a high A-T content

Answer: Option A

Explanation:

No answer description available for this question.

Question: In DNA, guanine pairs with
[A].

Adenine

[B].

Cytosine

[C].

Thymine

[D].

Uracil

Answer: Option B

Explanation:

No answer description available for this question.

Question: DNA replication in eukaryotes occurs only in
[A].

G1 phase

[B].

S phase

[C].

G2 phase

[D].

M phase

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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

Answer: Option C

Explanation:

No answer description available for this question.

Question: DNA helicase is used to
[A].

unwind the double helix

[B].

interact the double helix closely

[C].

break a phosphodiester bond in DNA strand

[D].

none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Question: Each replication bubbles consists of
[A].

3 replication forks

[B].

2 replication forks

[C].

4 replication forks

[D].

1 replication forks

Answer: Option B

Explanation:

No answer description available for this question.

Question: Deoxyribonucleoside triphosphates, being need in the chain termination methods are
[A].

dATP

[B].

dGTP and dCTP

[C].

dTTP

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.