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Each turn of the citric acid cycle produces how many NADH molecules?
AOne NADH
BTwo NADH
CThree NADH
DFive NADH
Answer & Solution
Correct answer: C. Three NADH
1. Every turn of the cycle harvests electrons at several oxidation steps.
2. Those electrons are loaded onto two different carriers.
3. Each turn of the cycle forms three NADH molecules and one FADH2 molecule.
4. One ATP or GTP is also produced by substrate-level phosphorylation.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 7 'Cellular Respiration', sections 7.1-7.7_
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