How do enzymes affect reactions?
o
a. enzymes are used up in reactions.
o
b. enzymes cause reactions that normally release energy to absorb
energy
o
c. enzymes prevent reactions from occurring.
o
d. enzymes lower the activation energy required for reactions to
occur.

it,s D

Explanation:

Enzymes are known as biological catalyst and work by lowering the activation energy of a reaction. They do this by providing an alternative pathway which speeds up the reaction without the catalyst undergoing a permanent change. ... An important thing to remember is that enzymes do not affect the equilibrium of a reaction.

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