All the cellular functions require energy and cells have no direct way of getting energy. Similar to us, cells also need to consume food and then obtain energy out of it. Cellular respiration is the process by which we all get energy. This process can be represented by the following chemical reaction:
In this process, glucose is broken down in presence of oxygen and the resultant products are carbon dioxide, water and energy (in the form of ATP or adenosine triphosphate molecules). ATP molecules further break down into ADP (or adenosine diphosphate) along with the release of energy. It is this energy that cells use to carry out their operations. Thus, cellular respiration is essential for cells' survival and functioning.
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