AP BIOLOGY

Detailed explanation-1: -What is Polypeptide? A polypeptide is a continuous, unbranched chain of amino acids joined by peptide bonds . To generate an amide, the peptide bond connects the carboxyl group of one amino acid to the amine group of the next amino acid.

Detailed explanation-2: -A protein consists of one or more chains of amino acids (called polypeptides) whose sequence is encoded in a gene.

Detailed explanation-3: -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). Proteins are therefore also known as polypeptides.

Detailed explanation-4: -A peptide is a short chain of amino acids. The amino acids in a peptide are connected to one another in a sequence by bonds called peptide bonds.

Detailed explanation-5: -A polypeptide chain is a sequence of amino acids covalently linked by peptide bonds. The chain structures of proteins are most easily visualized with backbone representations. A short polypeptide consisting of 50 or fewer amino acids is termed a peptide.