Question

which molecule is the building block of a protein? fatty acid glycerol amino acid nucleotide monosaccharide disaccharide

Explanation:

Proteins are composed of long - chains of amino acids linked by peptide bonds. Fatty acids and glycerol are components of lipids, nucleotides are the building blocks of nucleic acids, and monosaccharides and disaccharides are types of carbohydrates.

Answer:

amino acid