Question

A nucleotide is the monomer unit of a nucleic acid. Which of the following correctly identifies the three components of a nucleotide?

Options

• Nitrogenous base, hexose sugar, and sulfate group

• Nitrogenous base, pentose sugar, and carboxyl group

• Amino acid, ribose sugar, and phosphate group

• Nitrogenous base, pentose sugar, and phosphate group

Answer 1

A nucleotide consists of three components: a nitrogenous base that provides genetic coding information, a pentose sugar (either ribose or deoxyribose) that forms the structural backbone, and a phosphate group that links nucleotides together through phosphodiester bonds.