Q: What speeds up chemical reactions inside cells?


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

Living things depend on catalysts to speed up many chemical reactions inside their cells. Catalysts in living things are called enzymes. Enzymes may be extremely effective. A reaction that takes a split second to occur with an enzyme might take billions of years without it!.

 Choices:

- nucleus

- inhibitors

- electrodes

- catalysts


A:
catalysts