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.
Helena investigates how enzymes are important to body processes. How is the role of enzymes in biochemical activity best explained?

Options:
- 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.

Enzymes enable reactions to occur at lower temperatures.