Nucleotides are what to DNA and RNA?

• A. Polymers.
• B. Enzymes.
• C. Monomers.
• D. Sugars.

Answer: (C)

Nucleotides are the building blocks for DNA and RNA, so they are monomers that assemble into polymers. Each nucleotide contains a sugar, a phosphate group, and a nitrogenous base, and long nucleic acid chains form when nucleotides link through phosphodiester bonds. Because of this structure, nucleic acids are polymers made up of many nucleotides, not sugars alone or enzymes. So nucleotides fit as monomers—the basic units that compose DNA and RNA.