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Chapter 6 Respiration
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The third step in cellular respiration: building ATP in the electron transport chain.
Used to build ATP in quantity! The big payoff occurs. 2
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Electrons Transport Chain
Oxygen Needed Glycolysis Krebs Cycle Electrons Transport Chain
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Glycolysis
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Glycolysis is ALWAYS the initial step in the process by which organisms break down sugar to generate fuel for their activities. Two distinct phases: an “uphill” preparatory phase and a “downhill” payoff phase. As Figure 4-29 (Glycolysis up close) illustrates, glycolysis is a sequence of chemical reactions (there are ten in all) through which glucose is broken down to yield two molecules of a substance called pyruvate. Glycolysis has two distinct phases: an “uphill” preparatory phase and a “downhill” payoff phase. 6
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Krebs Cycle
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Krebs Cycle
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Electron Transport Chain
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Follow the Electrons, as We Did in Photosynthesis
Start with the electrons carried by NADH and FADH2. Over-the-counter NADH pills provide energy to sufferers of chronic fatigue syndrome. Why might this be? Figure 4-33 The big energy payoff This proton concentration gradient represents a significant source of potential energy! Oxygen is the electron acceptor at the end. 14
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Each of these proteins uses some of the energy in the electron
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Electron Transport Chain
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Electron Transport Chain
TOTAL from 1 GLUCOSE 36 ATP Glycolysis 2 ATP Krebs Cycle Electron Transport Chain 32 ATP
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Summary of Cellular Respiration.
The 3 stages: Glycolysis Krebs cycle Electron transport
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Amoeba Sisters Cellular Respiration & the Mighty Mitochondria
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NO OXYGEN NEEDED https://www.britannica.com/science/fermentation
Fermentation NO OXYGEN NEEDED
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Lactic Acid Fermentation
Alcohol Fermentation Lactic Acid Fermentation
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