Enzymes ________.
A) increase the rate of a reaction by making the reaction more exergonic
B) increase the rate of a reaction by lowering the activation energy barrier
C) increase the rate of a reaction by reducing the rate of reverse reactions
D) change the equilibrium point of the reactions they catalyze
E) make the rate of a reaction independent of substrate concentrations

Question

Quizplus · Accepted Answer

Enzymes lower the activation energy barrier, which enables the substrate to reach the transition state more easily and hence increase the rate of the reaction. This allows the reaction to occur more quickly and efficiently than it would without the enzyme present.