AP BIOLOGY

Detailed explanation-1: -Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.

Detailed explanation-2: -A protein molecule is made from a long chain of these amino acids, each linked to its neighbor through a covalent peptide bond (Figure 3-1).

Detailed explanation-3: -A poly(amino acid) is a polymer composed of amino acids as monomeric units. Structural and functional proteins, polypeptides, peptides and polymers derived from amino acids, that is, poly(-alanine) and ɛ-poly(lysine), are classified as poly(amino acid)s.