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Cellular Respiration

Cellular Respiration. Purpose: create a form of energy useable by the cell Like Getting an Allowance. 3 Parts. Glycolysis Citric Acid Cycle (Kreb’s Cycle) Electron Transport Chain. Glycolysis. Takes place in cytoplasm Starts with glucose, NAD and ADP

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Cellular Respiration

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  1. Cellular Respiration Purpose: create a form of energy useable by the cell Like Getting an Allowance

  2. 3 Parts • Glycolysis • Citric Acid Cycle (Kreb’s Cycle) • Electron Transport Chain

  3. Glycolysis • Takes place in cytoplasm • Starts with glucose, NAD and ADP • Ends with 2 molecules called pyruvate, NADH, 2 ATP (uses 2 ATP) • Doesn’t need Oxygen

  4. Kreb’s Cycle (Citric Acid Cycle) • Takes place in the mitochondria • Requires Oxygen • Starts with pyruvate • Ends with more NADH, CO2, and FADH2, some ATP

  5. Electron Transport Chain • Takes place in the mitochondria • Makes the majority of the ATP (32) • Breaks down NADH and FADH2

  6. Fermentation • Occurs in the absence of Oxygen • Takes place in the cytoplasm • 2 types: • Alcohol Fermentation • Lactic Acid Fermentation • Goal: Reduce pyruvate; produces NAD+ • NAD+ can then go back to glycolysis to produce ATP

  7. Alcohol Fermentation Lactic Acid Fermentation • Occurs in yeasts and some bacteria • Product (alcohol) is toxic to the organism • Occurs in humans and other mammals • Product (lactic acid) is toxic to mammals • This is the “burn” felt when exercising Fermentation

  8. Comparison

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