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Energy

Energy. Jesse, Mitch and Leah. Anaerobic Respiration. • In anaerobic respiration ATP is only created through glycolysis because fermentation yields no ATP. • Glycolysis uses 2 ATP and produces 4 ATP so that gives a net amount of 2 ATP.

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Energy

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  1. Energy Jesse, Mitch and Leah

  2. Anaerobic Respiration • In anaerobic respiration ATP is only created through glycolysis because fermentation yields no ATP. • Glycolysis uses 2 ATP and produces 4 ATP so that gives a net amount of 2 ATP. Efficiency= Energy required to make ATPx 100% Energy released by oxidation of glucose Efficiency= 2 x 12 kcal x 100% 686 kcal =3.5% *Energy is being measured in kilo calories. Complete oxidation of glucose releases 686 kilo calories.

  3. Aerobic Respiration • Many ATP molecules are made in aerobic respiration. The amount of ATP molecules varies from cell to cell. • Glycolysis and Krebs cycle each produce 2 ATP molecules for every glucose molecule that is oxidized. • NADH molecules generate 3 ATP molecules from supplying the electron transport chain. • FADH2 molecules generate 2 ATP molecules. • 10 NADH and 2 FADH2 made through aerobic respiration can produce up to 34 ATP. • 4 ATP molecules form glycolysis and the Krebs cycle give maximum yield of 38 ATP molecules per molecule of glucose.

  4. Efficiency of Aerobic Respiration • • NADH can’t diffuse through the inner membrane of the mitochondrion, instead it is actively transported into the mitochondrial matrix. • • Active transport of NADH consumes ATP. • Result: Eukaryotic cells produce only about 36 ATP molecules per glucose molecule. • Efficiency= 38 x 12 kcal x 100% • 686 kcal • =66% • * Aerobic respiration is nearly 20 times more efficient than glycolysis alone *

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