BIOC 2300 Study Guide - Final Guide: Nicotinamide Adenine Dinucleotide Phosphate, Nicotinamide Adenine Dinucleotide, Riboflavin

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O i l r i g oxidation is the loss of electrons, reduction is the gain of electrons. Two prominent coenzymes accept electrons (become reduced) and transfer them to. O2: nicotinamide adenine dinucleotide (nad+) requires niacin(acquired in the diet, flavin adenine dinucleotide (fad) requires riboflavin (acquired in the diet, also, nicotinamide adenine dinucleotide phosphate (nadp+) carries electrons but its role is mainly in reductive biosynthesis. In living organisms, energy-capturing and energy-releasing processes involve redox reactions. Many redox reactions have both an electron and a proton transferred: nad+ accepts a proton and two electrons to become nadh, fad accepts 2 protons and 2 electrons to become fadh2. Conversion of pyruvate and nadh to lactate and nad+ is under anaerobic conditions. Electrons flow spontaneously from a species with a more negative e " to a species with a more positive e ". Living organisms use redox coenzymes as high-energy electron carriers (nadh and.