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Cellular Respiration

Last updated: January 30, 2017

What Does Cellular Respiration Mean?

Cellular respiration refers to the metabolic reactions at the cellular level that result in the breakdown of molecules from nutrients and the release of energy that is used to fuel cellular processes. These catabolic reactions result in the release of adenosine triphosphate (ATP) and waste products.

Safeopedia Explains Cellular Respiration

Cellular respiration takes place in all living organisms and requires the intake of oxygen. Carbon dioxide is released as a waste product. Although cellular respiration also takes place in plants, the production of oxygen through photosynthesis outweighs the release of carbon dioxide from respiration. Heat is also released in the process, but although respiration is similar to combustion in this regard, the release of heat is much slower and more controlled.


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