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

Water molecule

Explanation:

A peptide bond is formed in between amino acids( two or more than two amino acids). The bond formation releases water molecules when two or more amino acids are joined together.

The amino group of one amino acid molecules reacts with the carboxyl group  of another molecule of amino acid which releases water.

This release of water is known as dehydration reaction which is also known as condensation reaction.

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