Question

proteins are made of monomers called ______________
glycerol and fatty acids
amino acids
monosaccharides
nucleotides

Explanation:

Proteins are biological macromolecules. Their monomers are amino - acids which are linked by peptide bonds to form polypeptide chains that fold into functional proteins. Glycerol and fatty acids form lipids, monosaccharides are monomers of carbohydrates, and nucleotides are monomers of nucleic acids.

Answer:

B. Amino Acids