The way a human body breaks down a pear during digestion provides significant insight into understanding cellular respiration. This life-sustaining process is important in the restoration of human energy in the body and the balance of chemical when nutrients and energy are extracted from the food eaten. This following is an explanation of some of the fundamental steps of cellular respiration.

At the initial stage of cellular respiration is glycolysis (Daempfle, 2016). A pear has protein and vitamins but a high percentage of sugars. At this stage, the glucose in the sugars in the pea is broken down. This process takes place in the cytoplasm of the cell. The glucose molecule of the pear is broken down gradually into two molecules of the pyruvate. …show more content…
At this point, the pyruvate molecules from the previous stage are oxidized with oxygen. Each pyruvate molecule goes into the mitochondrial mix where it is converted into a two-carbon molecule bound to Coenzyme A, known as acetyl CoA as water and CO2 is released and {NADH} NADHN, A, D, H is generated (Khanacademy, 2015).

The third stage is called the citric acid cycle. The acetyl CoA is here converted into ATP, NADH, FADH2 (forms of energy) andCO2 is released. At the final stage, the forms of energy derived from the pear cellular respiration go through oxidative phosphorylation where they are transported through the electron transport chain. The majority of the biological energy demands in aerobic cells are supplied by the machinery of oxidative phosphorylation which resides in the mitochondria (Ghukasyan, Heikal, Eds., 2014). At the end of cellular respiration, the energy is stored ready for use.

In conclusion, this essay has discussed the steps of cellular respiration of a pear and show the energies that are produced at each step. It is evident that there are four important stages. The pear digestion process indeed sheds light on the biological functions of the body and showcases the importance of energy in the