Question

what type of bond holds the amino acids together on the polypeptide chain?
ester bond
hydrogen bond
ionic bond
peptide bond (type of covalent bond)
rewatch

Explanation:

• An ester bond is typically found in esters, not in polypeptide chains.
• A hydrogen bond is a weak intermolecular force, not the bond that links amino acids in a polypeptide chain.
• An ionic bond is formed by the transfer of electrons between ions, not relevant for amino - acid linkage in polypeptides.
• A peptide bond (a type of covalent bond) is formed between the carboxyl group of one amino acid and the amino group of another amino acid, linking them together in a polypeptide chain.

Answer:

Peptide Bond (type of Covalent Bond)