Cells harvest energy stored in food by using cellular respiration.As shown in the diagram, cellular respiration produces ATP (Adenosine Triphosphate). It is a high energy molecule that is expanded by working cells. Carbohydrates, fats, and proteins are used as fuel in cellular respiration to create ATP. When we eat carbohydrates, the digestion converts them into simple sugars which are carried to cells and stored in various tissues in the body such as liver, muscle and brain. These sugars get broken down by cellular respiration into pyruvic acid and ATP. ATP is used by the cells for energy.
Works Cited
Cellular Respiration . (2011). Retrieved 8/19/2011, from http://medical-dictionary.thefreedictionary.com/cellular+respiration
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