Question

Distance between two successive base pairs in DNA is
a) 0.34nm
b) 0.34A˚
c) 3.4nm
d) 34A˚

Answer 1

Hint: DNA is a double helix. DNA is the sole carrier of hereditary information. The total number of purines in DNA is always equal to the total number of pyrimidines (A+G=T+C).

Complete answer:
The B-DNA is 20 Angstroms wide, and the distance between base sets is 3.4 Angstroms, or 0.34 nm. The base matching of inverse strands is stereo chemically specific, with adenine constantly blending with thymine and guanine constantly blending with cytosine. A-T and G-C base sets frame two and three hydrogen bonds, respectively. The normal distance per base pair along the DNA axis in Z-DNA, which is thinner than B-DNA, is 0.38 nm, while in A-DNA, which is thicker, it is 0.23 nm.
The DNA is an enormous macromolecule. It is also called the double helix of DNA because it has two strands that are twisted around one another. DNA is made up of nucleotides consisting of a group of phosphate, a sugar pentose and a nitrogen base. The strands of DNA are composed by the collections of phosphate and pentose sugar linked together by phosphodiester linkage.

In this case, the correct answer is A- '0.34nm'.

Note:
RNA has been regarded as a hereditary material in a previous theory known as world speculation for RNA, since it is a compound and a self-replicator. Whatever it is, RNA is usually flimsy. However, RNA has been replaced by DNA before very long, to convey inherited data since, under special conditions, it is usually more stable than RNA. Since DNA is the true inherited material, it is also referred to as the contours of life.