write the in anerobic pathway of glucose
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Anaerobic glycolysis is the main metabolic pathway used in the setting of limited oxygen supply during exercise. It is used during high-intensity, sustained, isometric muscle activity.1 It is inefficient from an energetic standpoint and produces only two ATP molecules per glucose molecule, which is 19 times less than the full energy potential of a glucose molecule. Despite its inefficiency, it is a rapid process, approximately 100 times faster than oxidative phosphorylation. The final step in the pathway is conversion of pyruvate to lactate, which leads to accumulation of lactic acid.
Aerobic glycolysis is more efficient; however, the price needed to maintain this system is high: it requires functional mitochondria, a functioning circulatory system with a constant oxygen supply, and the ability to eliminate carbon dioxide. It is used as the main supply of energy during sustained, dynamic forms of exercise such as walking, but if short bursts of energy are needed, the system is often overwhelmed and anaerobic glycolysis takes over.