En esta publicación, comparto la respuesta a la pregunta Anaerobic conditions and acetyl CoA formation:, con una explicación detallada.
Pregunta ?
Anaerobic conditions and acetyl CoA formation:
Respuesta ✅
Under anaerobic conditions (a lack of oxygen), the conversion of pyruvate to acetyl CoA stops.
Which of these statements is the correct explanation for this observation?
a. Oxygen is an input to acetyl CoA formation.
b. In the absence of oxygen, electron transport stops. NADH is no longer converted to NAD+, which is needed for the first three stages of cellular respiration.
c. ATP is needed to convert pyruvate to acetyl CoA. Without oxygen, no ATP can be made in oxidative phosphorylation.
d. Oxygen is required to convert glucose to pyruvate in glycolysis. Without oxygen, no pyruvate can be made.
b. In the absence of oxygen, electron transport stops. NADH is no longer converted to NAD+, which is needed for the first three stages of cellular respiration.
NAD+ couples oxidative phosphorylation to acetyl CoA formation. The NAD+ needed to oxidize pyruvate to acetyl CoA is produced during electron transport. Without O2, electron transport stops, and the oxidation of pyruvate to acetyl CoA also stops because of the lack of NAD+.
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