The diagram shows the structure of a primary protein.Which of the following options indicates peptide linkage (bond) in the given diagram?
Correct answer: C. C
- A. A
- B. B
- C. C
- D. D
Explanation
A peptide bond links the carbon atom of one amino acid's carboxyl group to the nitrogen atom of the following amino acid's amino group, forming the backbone of the protein. So option C is peptide bond. All other options are incorrect.
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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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