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 RespirationCellular Respiration mitochondria break down food molecules to produce ATP3 stagesGlycolysisCitric Acid Cycle (Krebs Cycle)Electron Transport ChainGlycolysis2 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 RespirationAnaerobic: FermentationLactic Acid FermentationAlcoholic FermentationLactic 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 acidAlcoholic 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 industryAerobic 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 ATPSummarizing Cellular RespirationC6H12O6 + 6O2 6CO2 + 6H2O + energyProducts of photosynthesis are the reactants in cellular respirationAerobic respiration is not the reverse*********


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