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10. Enzymes are _______ in the body that speed up chemical reactions.

A. catalysts
B. cells
C. concentrations
D. chloroplasts
I believe it is A but I am not sure.

User Freestyler
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2 Answers

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It is a catalysts it helps it go faster
User Zappescu
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Answer:

I think it is A . Catalysts lower activation energy for reactions, which faster the rate

User Toby Collins
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