Cellular Respiration. Cellular Respiration – mitochondria break down food molecules to produce ATP 3 stages Glycolysis Citric Acid Cycle (Kreb’s Cycle)

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  • Cellular Respiration

  • Cellular Respiration mitochondria break down food molecules to produce ATP3 stagesGlycolysisCitric Acid Cycle (Krebs Cycle)Electron Transport Chain

  • Glycolysis2 molecules of ATP needed- 4 produced for net gain of 2 ATP series of chemical rxns that break down glucose 2 molecules of pyruvic acidC-C-C-C-C-C C-C-C + C-C-C Pyruvic acid then moves into the mitochondriaAerobic or Anaerobic Respiration

  • Anaerobic: FermentationLactic Acid Fermentation

    Alcoholic Fermentation

  • Lactic Acid FermentationOccurs in muscle cells during strenuous exerciseForm 2 molecules of lactic acidlactic acid accumulates in the cells increasing the acidity and causing muscle fatigueLactic acid travels to liver and is converted back to pyruvic acid

  • Alcoholic FermentationUsed by yeast cells and some bacteria to produce CO2 and ethyl alcoholCO2 forms bubbles in the dough when making breadbasis of the wine and beer industry

  • Aerobic RespirationKrebs Cycle1. occurs in the mitochondria2. each turn of the cycle produces 2 molecule of ATP & 2 molecules of CO2Electron Transport Chain1. takes place on the cristae2. O2 + 4e- + 4H+ 2 H2O + 32 ATP

  • Summarizing Cellular RespirationC6H12O6 + 6O2 6CO2 + 6H2O + energyProducts of photosynthesis are the reactants in cellular respirationAerobic respiration is not the reverse

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