LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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1
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3
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4
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Detailed explanation-1: -One NADH molecule is equivalent to three ATP molecules inside the mitochondria.
Detailed explanation-2: -Inside the mitochondria, one molecule of NADH is equivalent to 3 ATP.
Detailed explanation-3: -The oxidation of one molecule of NADH thus leads to the synthesis of three molecules of ATP, whereas the oxidation of FADH2, which enters the electron transport chain at complex II, yields only two ATP molecules.
Detailed explanation-4: -ATP-synthase synthesizes 1 ATP for 4 H+ ions. Therefore, 1 NADH = 10 H+, and 10/4 H+ per ATP = 2.5 ATP per NADH (**some sources round up**).
Detailed explanation-5: -NADH produces the following amount of ATP: Glycolysis: By oxidative phosphorylation, 2 NADH generates 6 ATP. Reaction to Transition: 2 NADH generates 6 ATP.