Question

which is released during the formation of a peptide bond?
a five - carbon sugar
an amino group
an amino acid
a water molecule

Explanation:

When a peptide bond forms between two amino acids, a condensation reaction occurs. In this reaction, the carboxyl group (-COOH) of one amino acid reacts with the amino group (-NH₂) of another amino acid. A hydrogen atom (H) from the amino group and a hydroxyl group (-OH) from the carboxyl group are removed. These combine to form a water molecule (H₂O), which is released. The remaining parts of the amino acids (the carbon from the carboxyl group and the nitrogen from the amino group) form the peptide bond (-CO - NH -). So, a water molecule is released during peptide bond formation.

Answer:

a water molecule