Q.Which of the following bond is responsible for the linkage between two amino acids?

A peptide bond is the covalent bond that links two amino acids together, formed by removal of a water molecule.

Proteins are polymers of amino acids. Two amino acids are joined by a condensation (dehydration) reaction between the carboxyl (-COOH) group of one amino acid and the amino (-NH2) group of the adjacent amino acid, releasing one molecule of water and forming a covalent C-N bond called a peptide bond. Many amino acids linked in this way by peptide bonds form a polypeptide chain, which folds up to become a functional protein.

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Amino acids are joined together in a protein chain by peptide bonds, formed through a dehydration (condensation) reaction between adjacent amino and carboxyl groups.

A peptide bond is a covalent amide linkage (-CO-NH-) formed when the carboxyl group of one amino acid reacts with the amino group of the next amino acid, releasing one molecule of water in the process (a condensation/dehydration reaction). Many amino acids linked in this way form a long chain called a polype …

Amino acids are joined together to form proteins by a peptide bond, formed between the -COOH group of one amino acid and the -NH2 group of the next.

Each amino acid has a central carbon bearing an amino group (-NH2), a carboxyl group (-COOH), a hydrogen, and a variable side chain (R group). When two amino acids combine:

• The carboxyl group (-COOH) of the first amino acid reacts with the amino group (-NH2) of the second amino acid.
• This is a dehydration (condensation) reaction — a molecule of water is released, and a covalent C-N bond called a peptide bond is formed: -CO-NH- …