Answer:
Polypeptide
Explanation:
A polypeptide contains 10 or more amino acids join together by a covalent bond called peptide bond.
A peptide bond is formed when when an alpha carboxyl group of one amino acid react with alpha amino group of another amino to form a CO-NH bridge.
Covalent linkage of two amino acids residue from a dipeptide, 3 amino acids residues from a tripeptide. Continuous polymerization of 10 or more amino acid is called a polypeptide. While when there are 50 or more amino acids join together by peptide bonds it is called protein.
