Enzymes increase the rate of chemical reactions by increasing activation energy barriers. During the progress of a reaction the substrates are separated from products by an energy barrier which the substrates need to cross. Mcat Question Of The Day Can You Get It Correct Check Here Link In Bio Https Www Motivatemd Com Mcat Question Of Th Question Of The Day Mcat Mcat Prep A an enzyme yields a specific product whereas a nonbiologival catalyst may produce more than one product and side reactions may occur. . Which of the following is true of enzymes. C Enzyme function is independent of physical and chemical environmental factors such as pH. 6 Which of the following activities does not require cellular energy. C Enzymes increase the rate of chemical reaction by lowering activation energy barriers. They are made of amino acids. B Enzyme function is generally increased if the three-dimensional structure or conformation of an en...