Question

the structure labeled w, which includes a phosphate group, sugar, and base, is called a(n)
a nucleotide
b gene
c protein
d amino acid

Explanation:

A nucleotide is composed of a phosphate group, a sugar (either deoxyribose in DNA or ribose in RNA), and a nitrogen - containing base. A gene is a segment of DNA that codes for a particular trait. Proteins are made up of amino acids. Amino acids are the building blocks of proteins, with a general structure of an amino group, a carboxyl group, a hydrogen atom, and a variable side chain attached to a central carbon atom.

Answer:

A. nucleotide