RESPIRATION

 Respiration: Respiration is a biochemical process in which the food materials are broken down to give energy. We human beings and other higher organism  take oxygen to break down the food materials to get energy. The food that we take is glucose and glucose is six carbon molecule. In the first step six carbon compound glucose breaks down in the  cytoplasm to give pyruvic acid. Pyruvic acid is also called as pyruvate which is a three carbon molecule. After the formation of pyruvate, next step differ from organism to organism. In lower organism like Yeast, Bacteria etc. braking down of pyruvate takes place in absence of oxygen, this is called as fermentation and produces Energy, Ethanol and carbon dioxide. Process is also termed as Anaerobic process.

 In our case and all the higher organism Pyruvic acid breaks down to form Energy, Carbon dioxide and moisture. Here the breaking down of pyruvic acid takes place in presence of oxygen so it is termed as Aerobic process.

Sometimes there may be lack of oxygen in our muscles  even though our respiration is aerobic then this type of respiration is termed as Lack of oxygen respiration. It leads to the formation of  Lactic acid and releases energy.Due to the accumulation of lactic acid it leads to the occurrence of  cramps.

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