Question

What are the three distinct chemical components that make up a nucleotide?

Options

• Carboxyl group, pentose sugar, and ammonia

• Nitrogenous base, hexose sugar, and sulfate group

• Nitrogenous base, pentose sugar, and phosphate group

• Amino acid, ribose sugar, and phosphate group

Answer 1

A nucleotide consists of three chemically distinct components: a nitrogenous base (purine or pyrimidine), a pentose sugar (ribose in RNA or deoxyribose in DNA), and a phosphate group derived from phosphoric acid. These three components link together to form the basic monomeric unit of nucleic acids.