Question

identify the monomer that makes up protein.
monomers
fatty acid
nucleotide
amino acid
monosaccharide

Explanation:

Proteins are macromolecules made up of amino acids. Amino acids have a central carbon atom bonded to an amino group (\(-NH_2\)), a carboxyl group (\(-COOH\)), a hydrogen atom, and a variable side chain (\(R\) group). The structure labeled "Amino Acid" in the given options has the characteristic amino (\(-NH_2\)) and carboxyl (\(-COOH\)) groups, which are the key functional groups of amino acids. Monosaccharides are the monomers of carbohydrates (e.g., glucose has a ring - like structure with multiple \(-OH\) groups). Fatty acids are components of lipids (they have a long hydrocarbon chain with a carboxyl group at the end). Nucleotides are the monomers of nucleic acids (they have a sugar, a phosphate group, and a nitrogen - containing base).

Answer:

Amino Acid