Proteins

Easychemistry

The peptide bond is formed between:

-COOH and -NH₂ groups of amino acids

Two -OH groups

Two -NH₂ groups

-SH groups

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Correct Answer:

-COOH and -NH₂ groups of amino acids

A Peptide Bond ( $- CO - N H -$ ) is a covalent bond formed through a condensation reaction (elimination of water) between two amino acids:

The carboxyl group ( $- COO H$ ) of one amino acid reacts with the amino group ( $- N H_{2}$ ) of another.
This linkage is a type of amide bond.
Due to resonance, the peptide bond has partial double bond character, making it planar and rigid.

This easy difficulty chemistry question is from the chapter biomolecules, covering the topic of proteins. It appeared in the 2025 exam.

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