The correct order of the stages of aerobic respiration is
Correct answer: D. glycolysis, link reaction, Krebs cycle, electron transport chain
- A. Krebs cycle, glycolysis, link reaction, electron transport chain
- B. electron transport chain, glycolysis, Krebs cycle, link reaction
- C. link reaction, glycolysis, Krebs cycle, electron transport chain
- D. glycolysis, link reaction, Krebs cycle, electron transport chain
Explanation
Glucose is first split in the cytoplasm, pyruvate is then decarboxylated to acetyl CoA, the acetyl group is oxidised in the Krebs cycle, and the reduced coenzymes feed the electron transport chain. Any other order runs products before the reactions that make them.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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