Question

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

Explanation:

Proteins are macromolecules. Amino acids are the basic units that link together via peptide bonds to form polypeptide chains, which then fold into functional proteins. Nucleotides are the building blocks of nucleic acids (like DNA and RNA). Monosaccharides (e.g., glucose) are the building blocks of carbohydrates, and disaccharides are made of two monosaccharides. Fatty acids and glycerol are components of lipids (e.g., triglycerides, which are made of three fatty acids and one glycerol molecule).

Answer:

amino acid