Catalysts affect the chemical reactions that take place within the body. what function do catalysts perform in chemical reactions? a. catalysts slow down the rate of chemical reactions. b. catalysts are always formed by chemical reactions. c. catalysts are used up during a chemical reaction. d. catalysts lower the activation energy of a chemical reaction.
D. Catalysts lower the activation energy. Activation energy is basically the barrier towards the rate of reaction. Catalysts lower this barrier and thereby increases the rate of the reaction. Hope this helps.