Cellulars Respiration Essay

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Associate Program Material Cell Energy Worksheet Answer the following questions: Cellular respiration: What is cellular respiration and what are its three stages? Cellular respiration is the conversion of light energy to chemical energy stored in food molecules. Cellular respiration can be grouped into three stages. This is Glycolysis, Citric acid cycle, Electrons. What is the role of glycolysis? Include the reactants and the products. Where does it occur? Glycolysis is a metabolic pathway which does not require oxygen in the cytoplasm of all organisms. The process converts one molecule of glucose into two molecules of pyruvate, and makes energy in the form of two molecules of ATP. During the final phase of glycolysis, four phosphate groups are transferred to ADP by to make four ATP. When the trios’ sugars are oxidized two NADH are produced. The end reaction Glucose +2NAD++ 2P: 2ADP= 2pyruvate + 2 NADH + 2 ATP +2 H20. What is the role of the citric acid cycle? Include the reactants and the products. Where does it occur? Each of the pyruvic acid molecules will be processed in two separate citric acid cycles. Here the three carbon pyruvic acid molecule is processed to produce ATP and carbon Dioxide molecules. This cycle uses ATP to specifically break down the pyruvate into Acetyl co-A. Once this goes through the cycle limited ATP as well as more NADH is produced .This happens in the mitochondria when sufficient oxygen is present to turn the carbon Dioxide. Is the role of the electron transport system? Include the reactants and the products. What Where does it occur? The role of the electron transport system is to complete the final oxidation of process of Acetyl CO-A which was started in the citric acid cycle. In this step, the products are water and AHP. These products are produced through processing the NADH product from the

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