Enzymes work at all pH levels. Enzymes decrease the rate of metabolism. Enzymes enable reactions to occur at lower temperatures. Enzymes raise the activation energy needed for a reaction.
I gave my students this multiple choice question: Helena investigates how enzymes are important to body processes. How is the role of enzymes in biochemical activity best explained?

Only one answer is correct among these 4 choices:
- Enzymes work at all pH levels.
- Enzymes decrease the rate of metabolism.
- Enzymes enable reactions to occur at lower temperatures.
- Enzymes raise the activation energy needed for a reaction.

Could you tell me which one is correct?

Enzymes enable reactions to occur at lower temperatures.