Question

enzyme x is needed for a reaction to occur. what is the most likely result when additional enzyme x is added to the reaction?

• a decrease in the product concentration

• an increase in the substrate concentration

• an increase in the reaction rate

• a decrease in the reaction rate

Explanation:

Enzymes act as catalysts that speed up chemical reactions by lowering activation energy. Adding more enzyme (when substrate is available) increases the number of active sites for substrate binding, thus increasing the reaction rate. The other options are incorrect: more enzyme would not decrease product concentration (it would increase it over time), nor increase substrate concentration (substrate is consumed), nor decrease reaction rate.

Answer:

an increase in the reaction rate