BIO NMDCAT Factors that Affect the Rate of Enzyme Reactions

nmdcat.online July 11, 2026

During enzyme-catalyzed reactions, the reaction rate increases with temperature only up to the optimum because

A. The substrate becomes unlimited

B. The increase in kinetic energy outweighs structural damage below the optimum

✓

C. The enzyme concentration increases automatically

D. Product molecules activate the enzyme

📝 Explanation

Up to the optimum temperature, increased molecular motion enhances effective collisions. Above the optimum, denaturation becomes the dominant effect.

📖 Additional Information

The substrate becomes unlimited
The increase in kinetic energy outweighs structural damage below the optimum
The enzyme concentration increases automatically
Product molecules activate the enzyme

Up to the optimum temperature, increased molecular motion enhances effective collisions. Above the optimum, denaturation becomes the dominant effect.

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