Question

many of the proteins in the body are enzymes that catalyze chemical reactions. what is the relationship between enzymes and activation energy? a when an enzyme catalyzes a reaction, it increases the activation energy of the product. b when an enzyme catalyzes a reaction, it decreases the activation energy of the reaction. c when an enzyme catalyzes a reaction, it increases the activation energy of the reaction. d when an enzyme catalyzes a reaction, it does not affect the activation energy of the reaction.

Explanation:

Enzymes are biological catalysts. Catalysts work by decreasing the activation energy of a reaction. This allows the reaction to occur more easily and at a faster rate. Options A (increases activation energy of product) is incorrect as enzymes affect the reaction's activation energy, not the product's. Option B (increases activation energy of reaction) is wrong because enzymes lower, not raise, the reaction's activation energy. Option D (does not affect activation energy) is false as enzymes do have an impact on activation energy.

Answer:

C. When an enzyme catalyzes a reaction, it decreases the activation energy of the reaction.