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 acts as a reactant.
D) it is used once and discarded.

Question

Quizplus · Accepted Answer

Enzymes lower the activation energy needed for a chemical reaction to occur, making it easier for the reaction to take place. This is achieved by binding to the reactants and stabilizing the transition state, leading to a faster reaction rate. Enzymes themselves are not consumed in the reaction and can be used multiple times.

When an Enzyme Catalyzes a Reaction