<P> The covalent chemical bonds are formed when the carboxyl group of one amino acid reacts with the amino group of another . The shortest peptides are dipeptides , consisting of 2 amino acids joined by a single peptide bond , followed by tripeptides , tetrapeptides , etc . A polypeptide is a long , continuous , and unbranched peptide chain . Hence , peptides fall under the broad chemical classes of biological oligomers and polymers , alongside nucleic acids , oligosaccharides and polysaccharides , etc . </P>
<P> The covalent chemical bonds are formed when the carboxyl group of one amino acid reacts with the amino group of another . The shortest peptides are dipeptides , consisting of 2 amino acids joined by a single peptide bond , followed by tripeptides , tetrapeptides , etc . A polypeptide is a long , continuous , and unbranched peptide chain . Hence , peptides fall under the broad chemical classes of biological oligomers and polymers , alongside nucleic acids , oligosaccharides and polysaccharides , etc . </P>
a long chain of amino acids linked by peptide bonds is a
a long chain of amino acids linked by peptide bonds is a
polypeptide
polypeptide