Fortunately the race ended before things got any worse. Kevin had won the race b

Question

Fortunately the race ended before things got any worse. Kevin had won the race by a few inches. As his teammates congratulated him, Kevin continued to breathe rapidly for a few minutes. He was doing this to repay the _______ debt he owed his body. Since he had been operating anaerobically (without _______) for awhile, he needed to take in extra oxygen after the race to repay his body. The extra oxygen would be used to turn the poisonous _________ which had accumulated in his muscles back into _________, which could then be sent on to the __________ cycle and the ____________ chain. Kevin waved to the cheering fans, unaware of the complex metabolic events that had brought him victory.

Explanation / Answer

Fortunately the race ended before things got any worse. Kevin had won the race by a few inches. As his teammates congratulated him, Kevin continued to breathe rapidly for a few minutes. He was doing this to repay the oxygen debt he owed his body. Since he had been operating anaerobically (without O2) for awhile, he needed to take in extra oxygen after the race to repay his body. The extra oxygen would be used to turn the poisonous lactate_ which had accumulated in his muscles back into pyruvate, which could then be sent on to the glycolytic cycle and the electron transport chain. Kevin waved to the cheering fans, unaware of the complex metabolic events that had brought him victory.

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