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

An increase in substrate concentration beyond the saturation point of an enzyme results in

A. A continuous increase in reaction rate
B. A gradual decrease in reaction rate
C. No further increase in reaction rate because all active sites are occupied
✓
D. Complete denaturation of the enzyme

📝 Explanation

Once every enzyme molecule has formed an enzyme-substrate complex, the enzyme becomes saturated. The reaction reaches Vmax, and additional substrate cannot further increase the rate.

📖 Additional Information

  • A continuous increase in reaction rate
  • A gradual decrease in reaction rate
  • No further increase in reaction rate because all active sites are occupied
  • Complete denaturation of the enzyme

Once every enzyme molecule has formed an enzyme-substrate complex, the enzyme becomes saturated. The reaction reaches Vmax, and additional substrate cannot further increase the rate.

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