How do enzymes accelerate the rate of chemical reactions?

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By changing the overall free energy change of the reactionBy blocking the reverse reaction from occurringBy increasing the speed of the forward reaction aloneBy lowering the activation energy required for the reaction

Explanation

Enzymes speed up reactions by reducing the activation energy barrier, making it easier for reactants to convert into products without altering the overall free energy change or selectively affecting only the forward or reverse reactions.