Which of the following statements concerning enzymes is false? a. In the absence of an enzyme, the two types of substrate molecules react very slowly. b. Enzymes speed up the rate of a chemical...

Which of the following statements concerning enzymes is false? a. In the absence of an enzyme, the two types of substrate molecules react very slowly. b. Enzymes speed up the rate of a chemical reaction. c. The active site of an enzyme holds the substrate molecules in the correct orientation, which increases the opportunity to form products. d. Non-competitive inhibitors increase the rate of an enzyme-catalyzed reaction. e. A competitive inhibitor binds at the active site.