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BIO NMDCAT Factors that Affect the Rate of Enzyme Reactions
nmdcat.online July 11, 2026

During an experiment, cooling an enzyme solution from 37°C to 5°C decreases the reaction rate mainly because

A. The enzyme is permanently denatured
B. Molecular motion and collision frequency decrease
✓
C. The substrate is chemically destroyed
D. The active site changes permanently

📝 Explanation

Low temperature slows the movement of enzyme and substrate molecules, reducing effective collisions. The effect is generally reversible.

📖 Additional Information

  • The enzyme is permanently denatured
  • Molecular motion and collision frequency decrease
  • The substrate is chemically destroyed
  • The active site changes permanently

Low temperature slows the movement of enzyme and substrate molecules, reducing effective collisions. The effect is generally reversible.

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