Acetyl CoA completely oxidizes to Carbon dioxide and liberates _.
Correct answer: D. ATP, NADH and FADH2
- A. NADH and FADH
- B. NADP and FADP
- C. ATP
- D. ATP, NADH and FADH2
Explanation
When acetyl CoA undergoes complete oxidation in the citric acid cycle (also known as the Krebs cycle or tricarboxylic acid cycle), it liberates carbon dioxide and transfers high-energy electrons to carrier molecules. The overall chemical reaction for the complete oxidation of one molecule of acetyl CoA in the citric acid cycle is:Acetyl CoA+3NAD++FAD+GDP+Pi+2H2 O→2CO2 +3NADH+3H++FADH2 +GTP+CoAThe NADH and FADH2 generated in this process carry high-energy electrons to the electron transport chain, where they contribute to the synthesis of ATP through oxidative phosphorylation. The carbon dioxide produced is a byproduct of the decarboxylation reactions that occur during the citric acid cycle.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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