ATP and Cellular Respiration

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ATP and Cellular Respiration. Breakdown of a Glucose Molecule to make ATP so our cells can perform chemical reactions. THE BASICS OF CELLULAR RESPIRATION. Heterotrophs organisms that cannot make their own energy and need to consume other organisms to get energy (consumers) - PowerPoint PPT Presentation

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ATP and Cellular Respiration

ATP and Cellular RespirationBreakdown of a Glucose Molecule to make ATP so our cells can perform chemical reactions

THE BASICS OF CELLULAR RESPIRATIONHeterotrophs organisms that cannot make their own energy and need to consume other organisms to get energy (consumers)All animals, fungi, and some bacteria are heterotrophs

Why Make ATP?Referred to as energy currency of the cellProvide energy for chemical reactions to take place in our body (cells)

MitochondriaSite of cellular respiration (where ATP is made)Conists of Outer membraneInner membraneMatrixCristae

Cellular Respiration BreakdownGlycolysisLocated in cytoplasm of cellKrebs Cycle Located in Mitochondrial MatrixElectron Transport ChainLocated in mitochondrial cristae

Glycolysis Breakdown of a single Glucose moleculeReactants Glucose molecule Products 2 pyruvate molecules2 ATP moleculesEnergy 2 NADH moleculesElectron carriers

PyruvatePyruvate can take 2 paths from this point:Aerobic Respiration (with oxygen) Pyruvate moves into mitochondria and ATP is made via Krebs Cycle and Electron Transport Chain Anaerobic Respiration (without oxygen)Pyruvate stays in cytoplasm and is converted into lactic acid

-Lactic Acid FermentationAerobic RespirationKrebs CycleConversion of 2 pyruvate moleculesReactants 2 pyruvate molecules Products4 CO molecules2 ATP moleculesEnergy 6 NADH moleculesElectron carriers2 FADHElectron carriers

Aerobic RespirationElectron Transport ChainElectrons are transferred to proteins from NADH and FADHElectrons are passed from one protein to the nextFinal electron acceptor is Oxygen (O)Reactants NADHFADHProducts 34 ATP moleculesEnergyWater (HO)

Anaerobic RespirationLactic Acid FermentationConversion of 2 molecules of pyruvate into lactic acid when oxygen is not present Happens during vigorous muscle exerciseLiver converts lactic acid back into glucose

Anaerobic Respiration Alcohol FermentationDoes not occur in humansOccurs in yeast when oxygen is not availableFacultative anaerobes Conversion of 2 molecules of pyruvate into ethanol

Photosynthesis and Cellular Respiration

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