Chapter 9. Cellular Respiration  The process that releases energy (ATP) by breaking down food molecules in the presence of oxygen.

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    21-Jan-2016

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  • Chapter 9

  • Cellular RespirationThe process that releases energy (ATP) by breaking down food molecules in the presence of oxygen

  • Mitochondria Found?Plant & Animal CellsWhere respiration takes placeJust aerobic parts

  • Aerobic Vs. Anaerobic RespirationAerobic = presence of O2RespirationAnaerobic = absence of O2Fermentation

  • Pathway of Cellular Respiration Glycolysis (Cytoplasm)Krebs Cycle (Mito.)Electron Transport Chain (Mito.)

  • GlycolysisGlukus = sweetLysis = loosening Occurs in CytoplasmBreaking one glucose down into 2 pyruvic acids(3 Carbon) & 2 ATP (net)

  • After GlycolysisAnaerobic = FermentationAerobic = Cellular Respiration

  • Fermentation Fermentation will make energy without O2Two typesAlcoholicLactic acid

  • Alcoholic Yeast & other microorganismsCO2 causes bread to rise

  • Lactic AcidAnimal muscles Happens during vigorous exerciseBuilds up in muscles causing cramps

  • Krebs CycleFollows glycolysisNeeds oxygenRespiration Occurs in mitochondriaBreaks down products of glycolysis into carbon dioxideReleasing energy to make electron carriers and ATP

  • Krebs Cycle

  • Electron Transport ChainInner membrane of mitochondriaElectrons move to produce energy

  • ETC:Makes ATP 2-3 per electron carrierOxygen is used as the final electron acceptor (H+)Forms water

  • Mitochondrial membraneNADH enters and releases an H+ and an electron.

  • Mitochondrial membraneNADH enters and releases an H+ and an electron.

  • Mitochondrial membraneThe electron travels to the next protein while simultaneously sending H+ across the membrane

  • Mitochondrial membraneThe electron is used to form water. The H+ then are pumped back into the mitochondria.

  • Mitochondrial membraneThis allows ATP to be made each time a H+ enters back in.

  • TotalsGlycolysisNet 2 ATPKrebs2 ATPETCElectron carriers = 32 ATP**Total = 36 ATP

  • Photosynthesis Vs Cellular Respiration

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