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Cellular Respiration

Cellular Respiration. Energy For Cells . Cellular Respiration. Energy is released by breaking the bonds of food molecules (such as glucose) to make ATP from ADP ADP = adenosine diphosphate ADP + P i  ATP 2 types aerobic respiration anaerobic respiration. Aerobic Respiration.

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Cellular Respiration

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  1. Cellular Respiration Energy For Cells

  2. Cellular Respiration • Energy is released by breaking the bonds of food molecules (such as glucose) to make ATP from ADP • ADP = adenosine diphosphate • ADP + Pi ATP • 2 types • aerobic respiration • anaerobic respiration

  3. Aerobic Respiration • respiration that requires oxygen • starts in the cytoplasm • glycolysis • moves to the mitochondria • Krebs Cycle • Electron Transport Chain

  4. Aerobic Respiration

  5. Aerobic Respiration • C6H12O6 + 6O2 6CO2 + 6H2O • 38 ATP are produced per molecule of glucose • 2 ATP are used, so net ATP is 36 • Some energy is lost as heat, so the actual number will be lower • exergonic reaction – energy is released

  6. Anaerobic Respiration • takes place in the absence of oxygen • Fewer ATP are produced – net ATP is 2 • 2 types • Lactic acid fermentation • Alcoholic fermentation

  7. Lactic Acid Fermentation • Enzymes break down a glucose molecule into two lactic acid molecules, transferring energy to ATP • C6H12O6 + 4ADP + 4Pi lactic acid + 4ATP • This process causes the pain in muscle fatigue

  8. Lactic Acid Fermentation

  9. Alcoholic Fermentation • Enzymes break down a glucose molecule into two molecules of ethanol and two molecules of CO2, transferring energy to ATP • C6H12O6 + 4ADP + 4Pi 2 ethanol + 2 CO2 + 4ATP • This process is used… • to produce alcohol • in gasoline additives • baking

  10. Alcoholic Fermentation

  11. Photosynthesis vs. Respiration

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