8. Respiration
Pyruvate Oxidation
Multiple Choice
Multiple ChoiceIn preparing pyruvate to enter the citric acid cycle, which of the following steps occurs?
A
Pyruvate is reduced, and a molecule of carbon dioxide is removed. The electrons removed in this process are used to oxidize NAD+ to NADH.
B
Pyruvate is oxidized, and a molecule of carbon dioxide is removed. The electrons removed in this process are donated to NADH to produce NAD+.
C
Pyruvate is reduced to acetyl-coA, which involves the reduction of pyruvate, the addition of a carbon dioxide from the environment, and its reduction by NADH.
D
Pyruvate is ionized directly to acetyl-coA.
E
Pyruvate is oxidized, and a molecule of carbon dioxide is removed. The electrons removed in this process are used to reduce NAD+ to NADH.
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