The amide bond between the carboxyl group of one amino acid and the nitrogen group of the next amino acid in the peptide chain is called a a. covalent bond c. hydrogen bond b. peptide bond d. ionic bond

Correct b. Peptide bond.

An amino acid has a carboxyl group and an amino group. When two amino acids react with each other, the carboxyl group of one amino acid reacts with the amino group of the other amino acid thereby forming a peptide bond accompanied by the loss of a water molecule. A long chain of amino acids is termed as a poly-peptide chain (proteins)

they are both synthetic elements

explanation:

d