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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

Cellular Respiration

Energy For Cells


Cellular respiration1
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


Aerobic respiration
Aerobic Respiration

  • respiration that requires oxygen

  • starts in the cytoplasm

    • glycolysis

  • moves to the mitochondria

    • Krebs Cycle

    • Electron Transport Chain



Aerobic respiration2
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


Anaerobic respiration
Anaerobic Respiration

  • takes place in the absence of oxygen

  • Fewer ATP are produced – net ATP is 2

  • 2 types

    • Lactic acid fermentation

    • Alcoholic fermentation


Lactic acid fermentation
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



Alcoholic fermentation
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




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