BIO NMDCAT Factors that Affect the Rate of Enzyme Reactions

nmdcat.online July 11, 2026

In laboratory experiments, the reaction rate remains directly proportional to enzyme concentration only when

A. Product concentration is very high

B. Substrate is present in excess

✓

C. Temperature is below freezing point

D. The enzyme is denatured

📝 Explanation

With excess substrate, every added enzyme molecule finds substrate to act upon, causing the reaction rate to increase proportionally.

📖 Additional Information

Product concentration is very high
Substrate is present in excess
Temperature is below freezing point
The enzyme is denatured

With excess substrate, every added enzyme molecule finds substrate to act upon, causing the reaction rate to increase proportionally.

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