What happens when an enzyme catalyzes a reaction? A. It lowers the activation energy of the reaction. B. It raises the activation energy of the reaction. C. It becomes a product. D. It acts as a reactant.

Answer:

B

Explanation:

When enzymes catalyzes a reaction : ( A ) It lowers the activation energy of the reaction

Enzymes are biological catalysts that accelerates the rate of chemical reaction in living organisms without been used up in the process. as the rate of a reaction increases the activation energy ( energy required to start the reaction ) decreases.  because

The rate of a chemical reaction is inversely proportional to the activation energy required by the reaction.

Hence we can conclude that when enzymes catalyzes a reaction it lowers the activation energy of the reaction

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IV:

DV:

Hypothesis:

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(5 Points)
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Respiration
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Photosynthesis
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Both

A model that shows the amount of energy that is passed on at each trophic level of a food chain is called ..

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Group of answer choices

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Setting up your kitchen before cooking, and getting out all your tools, equipment,
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