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nmdcat.online July 11, 2026

The turnover number (Kcat) of an enzyme is a measure of

A. The number of enzyme molecules required to saturate a substrate
B. The affinity of the substrate for the enzyme's active site
C. The number of substrate molecules converted to product per enzyme molecule per unit time
✓
D. The time required for half of the enzyme molecules to be denatured

📝 Explanation

Turnover number represents the maximum number of chemical conversions of substrate molecules per second that a single catalytic site executes.

📖 Additional Information

  • The number of enzyme molecules required to saturate a substrate
  • The affinity of the substrate for the enzyme's active site
  • The number of substrate molecules converted to product per enzyme molecule per unit time
  • The time required for half of the enzyme molecules to be denatured

Turnover number represents the maximum number of chemical conversions of substrate molecules per second that a single catalytic site executes.

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