Question

Enzymes are protein catalysts. What is the role of a catalyst?

A. Provides extra energy for a reaction
B. Lowers the activation energy of a reaction
C. Allows only irreversible reactions to happen
D. Eliminates the activation energy of a reaction

Answer 1

Answer: B

Explanation: enzymes catalyze reactions by reducing the amount of energy required to reach the transition state. Thus lowering the activation energy.