RIO BIO 156 EXAM 1 WITH QUESTIONS AND CORRECT ANSWERS ALREADY GRADED A+ WITH A 100% GUARANTEED TO PASS

activation energy - the minimum amount of energy required to get a chemical reaction started. active site - Pocket in an enzyme where substrates bind and a chemical reaction occurs. ADH (alcohol dehydrogenase) - helps break down ethanol and other toxic compounds. aerobic - Involving or occurring in the presence of oxygen. aerobic respiration - Oxygen-requiring metabolic pathway that breaks down sugars to produce ATP. aerobic respiration can be dangerous - When an oxygen molecule (O2) accepts electrons from an electron transfer chain, it dissociates into oxygen atoms. Most of the atoms immediately combine with hydrogen ions and end up in water molecules. however, an oxygen atom escapes this final reaction. The atom has an unpaired electron, so it is a free radical. mitochondria cannot detoxify free radicals, so they rely on antioxidant enzymes and vitamins in the cell's cytoplasm to do it for them. aerobic respiration three stages - 1. glycolysis 2. krebs cycle 3. electron transfer phosphorylation