Answer: A peptide bond
Step-by-step explanation:
A peptide bond is a type of bond that covalently joins two amino acids to yield a dipeptide. A peptide bond is formed by removal of elements of water from the alpha carboxyl group of one amino acid and the alpha amino group of another amino acid. When two amino acids are joined by a peptide bond, a dipeptide is produced. When three amino acids are joined by two peptide bonds, a tripeptide is produced. When a few amino acids are joined by peptide bonds, an oligopeptide is produced while when many amino acids are joined, the product is called a polypeptide.