Question

question
how do enzymes affect activation energy?
answer
enzymes raise the amount of energy required to activate a chemical reaction.
enzymes lower the amount of energy required to activate a chemical reaction.
enzymes have no affect on activation energy.
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Explanation:

Enzymes are biological catalysts. Catalysts lower the activation - energy required to start a chemical reaction, allowing reactions to occur more easily and quickly.

Answer:

Enzymes lower the amount of energy required to activate a chemical reaction.