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nmdcat.online June 27, 2026

The primary event that stops an enzyme-catalyzed reaction upon its denaturation is the

A. Hydrolysis of the peptide backbone
B. Loss of the enzyme's tertiary structure and active site shape
✓
C. Removal of the prosthetic group from the apoenzyme
D. Accumulation of the reaction product in the medium

📝 Explanation

An enzyme's catalytic function is entirely dependent on the specific 3D shape of its active site. Denaturation by heat, pH, or chemicals disrupts the weak bonds maintaining the tertiary structure, causing the active site to lose its precise conformation, preventing substrate binding.

📖 Additional Information

  • Hydrolysis of the peptide backbone
  • Loss of the enzyme's tertiary structure and active site shape
  • Removal of the prosthetic group from the apoenzyme
  • Accumulation of the reaction product in the medium

An enzyme's catalytic function is entirely dependent on the specific 3D shape of its active site. Denaturation by heat, pH, or chemicals disrupts the weak bonds maintaining the tertiary structure, causing the active site to lose its precise conformation, preventing substrate binding.

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