Investigating Cellular Respiration

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Normally the body uses glucose to make ATP through cellular respiration, a series of metabolic reactions. When the body has enough oxygen the pyruvic acid is moved to the mitochondria to break down. Where it is then put through the Krebs cycle and the electron transport chain. During the experiment we were not giving our muscles enough time in between trials to gather enough oxygen for cellular respiration or aerobic respiration. Instead the muscles use anaerobic respiration when enough lactic acid builds up from all the muscle movement. The cells use the lactic acid to make ATP through lactic acid fermentation. Your muscles feel fatigued due to the lactic acid build up. When you rest your hand at the end of the experiment the lactic acid can

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