Which statements about peptide bonds are true? The formation of a peptide bond involves a dehydration reaction. Peptides are polymers of proteins. A tetrapeptide contains five amino acid residues. Peptide bonds are ester linkages. A tripeptide contains three amino acid residues.

- The formation of a peptide bond involves a dehydration reaction.

- A tripeptide contains three amino acid residues.

Explanation:

Peptide bonds are a type of covalent bonds that form between amino acid molecules. A peptide bond links two amino acids together by removing an hydrogen atom from the amine functional group (-NH2) and an hydroxyl (OH) from carboxylic functional group (-COOH) to release a water molecule. Hence, the formation of a peptide bond involves a dehydration reaction i.e loss of water.

This linking of one amino acid to another via a peptide bond forms a polypeptide and consequently a protein molecule. In other words, proteins are polymers of peptides. However, the linkage of three amino acids is called TRIPEPTIDE

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explanation: