LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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NAD+
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NADPH
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NADH
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FADH2
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Detailed explanation-1: -NADH is the reduced form of the electron carrier, and NADH is converted into NAD+. This half of the reaction results in the oxidation of the electron carrier. Pyruvate is converted into lactic acid in this reaction.
Detailed explanation-2: -NAD+ is used as an electron acceptor during glycolysis, whereas NADH is used by mitochondrial complex I to drive the mitochondrial electron transport chain (ETC).
Detailed explanation-3: -NAD+ and another essential intracellular coenzyme flavin adenine dinucleotide (FAD+) play essential roles in cellular oxidation-reduction (redox) reactions and are responsible for accepting high-energy electrons and carrying them to the electron transport chain (ETC) to synthesize adenosine triphosphate (ATP) [3].
Detailed explanation-4: -In each of the enzymatic reactions, NAD+ accepts two electrons and a H+ from ethanol to form NADH.