8. List 4 GENERAL ways that a CELL, can DECREASE the rate of its reactions? 1. 2. 3. 4. 10. What is the BASIC difference between substrate-level phosphorylation and oxidative phosphorylation? (do not tell me which pathways are involved). 11. Exactly….and I mean exactly…..which chemical reaction in the aerobic metabolic pathways, actually uses oxygen, and what does it do to the oxygen that it uses. Solution 8). Enzymes are the proteins, which decrease the activation energy of reaction and catalyse the reaction process. All enzymes are catalysts because, Cells decrease the rate of reaction by 1). Altering pH 2). Accumulation of products 3). Altered temperature 4). Inactivation of catalyst.