Final answer:
During cellular respiration, NAD+ transforms by gaining a hydrogen ion and two high-energy electrons to become NADH, which plays a key role in ATP production.
Explanation:
In cellular respiration, NAD+ is a coenzyme that plays a crucial role in the process. During cellular respiration, NAD+ transforms by gaining a hydrogen ion and two high-energy electrons from glycolysis or the citric acid cycle, becoming NADH. These electrons are then transferred to the electron transport chain to produce ATP.
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