1.

What is oxygen debt? Explain.

Answer»

(i) The muscles fails to get sufficient oxygen during strenuous exercise to fulfil their energy requirements and contracts anaerobically. It accumulates lactic acid produced by glycolysis. The oxygen consumption of muscles exceed during recovery, known as oxygen debt of the muscle. 

(ii) This oxygen is used in oxidising the accumulated lactic acid aerobically and restoring ATP in muscle fibre.



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