The primary structure of proteins is stabilized by:
Correct answer: D. Peptide bonds
- A. Disulphide bonds
- B. Hydrogen bonds
- C. Hydrophobic interactions
- D. Peptide bonds
Explanation
The primary structure of proteins is defined by the linear sequence of amino acids, which are linked by peptide bonds. These covalent bonds are formed through a dehydration reaction between the carboxyl group of one amino acid and the amino group of another, creating a stable backbone for the protein. In contrast, disulfide bonds, hydrogen bonds, and hydrophobic interactions play crucial roles in higher-level structures (secondary, tertiary, and quaternary) but do not stabilize the primary sequence.
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