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Cellular Respiration And Photosynthesis Essay

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Photosynthesis and aerobic cellular respiration are two processes that work together to sustain the living environment. They are similar processes in which energy is being converted and utilized by organisms, however, photosynthesis and aerobic respiration also share some differences. Photosynthesis is the process that takes place in plants and some algae in which light energy from the sun is converted to chemical energy and is stored in the bonds of sugar. All plants need to make sugar is light energy, carbon dioxide, and water. Photosynthesis takes place in the chloroplasts of the plant cell, where the process utilizes chlorophyll. The parts of a chloroplast include the inner and outer membranes, stroma, and thylakoids that are stacked…show more content…
One of the two pyruvate molecules that was generated from glycolysis enters the mitochondrial matrix where it is converted to acetyl CoA. Acetyl CoA initiates a cyclical series of reactions, creating the first compound in the Krebs cycle by transforming the last product formed in the Krebs cycle into Citrate. During the Krebs cycle, 1 ATP molecule is created and 3 molecules of carbon dioxide are released. Since only 1 of the 2 pyruvates is needed, the Krebs cycle repeats and six carbon dioxide molecules are released and the Krebs cycle forms two more ATP. Krebs cycle produces several molecules of NADH and FADH2, which will be used in creating more ATP in the third step of aerobic cellular respiration.
The third step in aerobic cellular respiration is the electron transport chain. NADH and FADH2 initiate the electron transport chain and transport electrons down a chain of reactions. NADH or FADH2 will work with electrons and oxygen to convert ADP to ATP. During this process, NADH loses its hydrogen and creates a hydrogen concentration gradient across the inner mitochondrial membrane. This hydrogen concentration gradient produces more ATP and NADH is now NAD+. At the end of this process, water and ATP is
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