The Human Body Requires Energy For Fuel Growth, Development, And Repair

1556 Words Nov 14th, 2015 7 Pages
The human body requires energy to fuel growth, development, and repair in order to sustain proper functioning and remain alive. For humans, this fuel source is food. For example, as Koletzko, Goulet, et. al. researched in infants, they found that infants born with gastroenterology diseases or disorders were unable to harvest energy from food they consumed and therefore suffered severe growth stunts and defects. The relationship between food and calories can now be established because food provides the calories the body needs to carry out living processing through the process of metabolism. There are many metabolic pathways in each cell that different types of foods go through. However, all of these pathways oxidize the food source and yield acetyl coenzyme A that can be used in the Krebs Cycle (Craig 2013). The Krebs Cycle is an aerobic process that occurs outside the mitochondria in the cytoplasm of the cell. It is the central metabolic pathway in which the cell utilizes acetyl coenzyme A to produce carbon dioxide, a small amount of ATP, and electron carrier molecules. More specifically, the Krebs Cycle produces 3 NADH+ molecules and 1 FADH+ molecule. These reduced carriers are now extremely energy dense and they move on the electron transport chain where they give up their extra electrons that “fall down” a series of compounds that gradually get more electronegative, eventually reaching oxygen, the most electronegative in the sequence, creating water. This creation…

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