Question

Which statement describes a DNA molecule?

a) it is single stranded
b) it has a double-helix shape
c) it is made completely of protein.
d) it contains two types of nitrogenous bases.

Answer 1

it has a double-helix shape

Answer 2

Answer: Option B

Step-by-step explanation:

The Deoxyribonucleic acid can be defined as a double stranded molecule made up of nucleic acids. The double helical structure that consists of the nucleic acid arises as a consequence of its secondary structure.

The double helix structure of the DNA is kept together by the nitrogenous bases that bind together.This double helix structure is right handed structure.