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Cellular respiration is key to making the body work. To do this cells use oxygen and make a process called the electron transport chain work to produce ATP and NADP: energy. When the cells of the body do not get enough oxygen to make the electron transport chain work, they will switch to a process called fermentation that produces energy in a less efficient way. It ultimately produces less ATP and NADP but it is better than none without oxygen. Fermentation also produces lactic acid which is part of the cause of muscle soreness.

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15y ago

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