Question

the primary function of an enzyme or any biological catalyst is to
multiple choice
increase the rate of a reaction.
reduce the energy of activation and increase the rate of a reaction.
increase the rate of a reaction and change the direction of a reaction.
change the direction of a reaction.
reduce the energy of activation of a reaction.

Explanation:

Enzymes are biological catalysts. They function by reducing the activation - energy barrier of a chemical reaction. This reduction in activation energy allows the reaction to proceed more quickly, thus increasing the reaction rate. Enzymes do not change the direction of a reaction as that is determined by thermodynamics.

Answer:

B. reduce the energy of activation and increase the rate of a reaction.