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When a globular protein is subjected to boiling, it undergoes denaturation. Which of the following chemical linkages remains unaffected during this process?

Options

  1. AHydrogen bonds
  2. BDisulfide linkages
  3. CHydrophobic interactions
  4. DPeptide bonds

Correct answer

D. Peptide bonds

Step-by-step solution

During the denaturation of proteins, the secondary and tertiary structures are destroyed, but the primary structure remains intact. The primary structure consists of the specific sequence of amino acids linked together by peptide bonds. Therefore, peptide bonds remain unaffected during denaturation. The hydrogen bonds, disulfide linkages, and hydrophobic interactions that stabilize the secondary and tertiary structures are disrupted, leading to the uncoiling of helices and unfolding of globules. Answer: Peptide bon

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