alleryStart learning →How many NADH molecules are formed on each single turn of the citric acid cycle?
AOne NADH molecule
BTwo NADH molecules
CThree NADH molecules
DFour NADH molecules
Answer & Solution
Correct answer: C. Three NADH molecules
1. Each turn of the cycle forms three NADH molecules.
2. One molecule of the other reduced carrier is formed alongside them.
3. One guanine triphosphate or adenosine triphosphate is also made in each cycle.
4. These carriers connect with the last portion of aerobic respiration to produce adenosine triphosphate.
5. Answering two counts only the pair made by the two regulated dehydrogenase steps and misses the final oxidation of malate.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.3 Oxidation of Pyruvate and the Citric Acid Cycle_
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