18774553-Cellular-Respiration-Explanation - Cellular...

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Cellular Respiration Cellular respiration is the process by which food is broken down by the body's cells to produce energy , in the form of ATP molecules. In plants, some of this ATP energy is used during photosynthesis to produce sugar. These sugars are in turn broken down during cellular respiration, continuing the cycle. There are three main stages of cellular respiration: 1) glycolysis, 2) Krebs Cycle, and 3) the Electron Transport Chain (ETC). Cellular Respiration Overview: Cellular respiration is carried out by every cell in both plants and animals and is essential for daily living. It does not occur at any set time, and, at the same point in time, Neighboring cells may be involved in different stages of cellular respiration. Cellular respiration is an exergonic reaction, which means it produces energy. It is also a catabolic process - it breaks down polymers into smaller, more manageable pieces. The ultimate goal of cellular respiration is to take carbohydrates, disassemble them into glucose molecules, and then use this glucose to produce energy-rich ATP molecules. The general equation for cellular respiration is: one glucose molecule plus six oxygen   molecules produces six carbon dioxide molecules, six water molecules, and approximately 36-38 molecules of ATP. (Please Note: The three steps of cellular respiration have been summarized below. The
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This note was uploaded on 12/04/2009 for the course BIOL 230 taught by Professor Gibson during the Spring '09 term at Tennessee Martin.

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18774553-Cellular-Respiration-Explanation - Cellular...

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