In dna and rna, a nitrogenous base, sugar, and phosphate groups together are called a
a. hydrogen bond.
b. double helix.
c. sugar-phosphate backbone.
d. nucleotide.

Option d

Explanation: A nucleotide can be defined as the organic molecules that serves as the monomers for the nucleic acid polymers such as deoxyribonucleic acid and ribonucleic acid.

These are the most essential biomolecules of all the living forms on the earth. They are composed of the three sub units that make up the whole structure.

A nitrogenous base, a five carbon sugar and atleast a phosphate group constitutes to form a nucleotide.

Example: DNA and RNA