Carbohydrates, DNA and lipids can be found in living things as long molecular chains. Which of the following statements describes how DNA differs from lipids and carbohydrates.

A) Only DNA contains nucleotides

B) Only DNA is found in the cytoplasm

C) Only DNA has carbon atoms

D) Only DNA is used for energy storage and structural support

The correct answer is option A, that is, only DNA comprises nucleotides.

Nucleotides refer to the organic molecules, which function as the monomer units for producing the nucleic acid polymer DNA. Nucleotides are the building elements of nucleic acids. They are comprised of three subunit molecules, that is, a five-carbon sugar, a nitrogenous base, and at least one phosphate group.