You ask Manny if he is taking any non-prescription drugs before refilling his prescriptions. He tells you he recently started taking a coenzyme Q10 supplement based on a recommendation from a friend. QUESTION: Describe the biochemical role of coenzyme Q10 and how supplementation may impact metabolism. Be sure to address the key terms listed below as part of your discussion; you may address additional etiologies as well. - coenzyme Q - Complex I - Complex II - Complex III - ubiquinone - ubiquinol - Electron transport chain - Oxidative phosphorylation - Reactive oxygen species.