STANDARD Zoology DNA Structure MCQ Question with Solution

The pitch of the helix is _______ there are roughly _______ in each turn of DNA

A

5.4 nm, 11 bp

B

4.4 nm, 12 bp

C

3.4 nm, 10 bp

D

2.4 nm, 10 bp

Option C

The DNA double helix has a pitch of 3.4 nm and contains 10 base pairs per turn.

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Escherichia coli has _______, and haploid content of human DNA is _______

Assertion (A): DNA is the predominant genetic material in most organisms. | Reason (R): DNA is more chemically and structurally stable than RNA.

What is the function of tRNA in the process of translation?

Assertion (A): Euchromatin is transcriptionally active chromatin. | Reason (R): Euchromatin is more densely packed and stains dark.