Question

which statement is true about nucleic acids?
they are found only in the nucleus of cells.
they store and transmit genetic information.
they are composed of sugar, glycerol, and nitrogen bases.
they serve as the subunits of proteins.

Explanation:

• For the option "They are found only in the nucleus of cells": RNA (a type of nucleic acid) is also found in the cytoplasm, so this is false.
• For the option "They store and transmit genetic information": DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are nucleic acids, and their primary function is to store (DNA) and transmit (both DNA and RNA) genetic information, so this is true.
• For the option "They are composed of sugar, glycerol, and nitrogen bases": Nucleic acids are composed of a sugar (deoxyribose or ribose), a phosphate group, and nitrogen - containing bases. Glycerol is a component of lipids, not nucleic acids, so this is false.
• For the option "They serve as the subunits of proteins": Amino acids are the subunits of proteins, not nucleic acids, so this is false.

Answer:

They store and transmit genetic information.