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A chemical reaction in a living cell occurs in the presence of a specific protein molecule. The concentration of this protein molecule remains the same before and after the reaction. This protein molecule is most likely

1. a coenzyme
2. a substrate
3. an enzyme
4. an acid

User Julesj
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1 Answer

23 votes
23 votes

Answer:

c

Step-by-step explanation:

User Jeanine
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