Q: What substances serve as catalysts in most of the biochemical reactions that take place in organisms?


Read this paragraph and choose the correct option from the provided answers:

Enzymes are involved in most of the biochemical reactions that take place in organisms. About 4,000 such reactions are known to be catalyzed by enzymes, but the number may be even higher. Enzymes allow reactions to occur at the rate necessary for life.

 Choices:

- hormones

- carbohydrates

- iseotrops

- enzymes


A:
enzymes