A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called__________?
Correct answer: C. Peptide bond
- A. Phosphodiester linkage
- B. Glycosidic bond
- C. Peptide bond
- D. Hydrogen bond
Explanation
A peptide bond forms when the carboxyl group of one amino acid reacts with the amino group of another, releasing one molecule of water and producing a C-N linkage. The likely mistake is choosing a hydrogen bond, which is a weak attraction involved in protein shape rather than the covalent bond joining amino acids.
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About Proteins
Proteins are polymers of amino acids joined by peptide bonds, and their function depends on primary, secondary, tertiary and quaternary structure. The topic covers fibrous and globular proteins, enzymes, antibodies, hormones and transport proteins, as well as denaturation by heat or extreme pH.
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