Question

which of the following statements regarding enzymes is true?
enzymes increase the rate of a reaction by making the reaction more exergonic.
enzymes increase the rate of a reaction by lowering the activation energy barrier.
enzymes increase the rate of a reaction by reducing the rate of reverse reactions.
enzymes change the equilibrium point of the reactions they catalyze.

Explanation:

Enzymes are biological catalysts. They work by lowering the activation energy barrier of a reaction, which is the minimum energy required for a reaction to occur. This allows the reaction to proceed more quickly. Exergonic refers to a reaction that releases energy, but enzymes do not make a reaction more exergonic. They also do not change the equilibrium point of a reaction (they just speed up the attainment of equilibrium) and do not reduce the rate of reverse reactions.

Answer:

Enzymes increase the rate of a reaction by lowering the activation energy barrier.