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Cellular aerobic respiration is a process by which ATP is produced by cells by the complete oxidation of organic compounds. The process uses oxygen because oxygen is the final electron acceptor. Said another way, the purpose of the process is to harvest electrons from organic molecules such as glucose and use that energy to make ATP. The cells of the body then use this ATP. The energy harvested from the food we eat is stored in the chemical bonds of ATP. The over all process is a complicated biochemical reaction that must use oxygen to complete the steps of glycolysis, the Krebs cycle, electron transport, and phosphorylation.
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