ADP, ATP, and Cellular Respiration. What is ATP? Energy Used by all cells Adenosine Triphosphate.

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Cellular Respiration

ADP, ATP, and Cellular Respiration

What is ATP?Energy Used by all cellsAdenosine Triphosphate

How Do We Get Energy From ATP?By breaking off one Phosphate.This requires and enzyme called ATPase

ATP HydrolysisATP Needs to Be Re-made and RecycledTo do this, and another enzyme called ATP synthase is used to reconnect a phosphate.

ATP Synthesis

ATP is Made During Cellular RespirationGlucose is oxidized and O2 is reduced

C6H12O6 + 6O2 6CO2 + 6H2O + 36-38 ATPsCell Respiration happens in three stagesGlycolysisTakes place in the CytoplasmAnaerobic ( Does NOT use Oxygen)Requires input of 2 ATP moleculesSplits Glucose into to molecules of Pyruvate

Produces 4 ATP, 2 NADH, 2 molecules of pyruvate. (Energy Carriers)GlucoseGlycolysisFermentationAerobic RespirationATPATPNo OxygenOxygenFermentationOccurs when O2 is NOT present (anaerobic)

Lactic Acid Fermentation in muscle cells (tired muscles)- converts pyruvates to lactic acid.

Alcohol Fermentation converts pyruvates to ethyl alcohol. (basics of wine and beer)

Produces 2 ATPs

GlycolysisFermentationAerobic RespirationATPATPNo OxygenOxygenStages of Cellular RespirationWhen Oxygen is present!

The Krebs CycleThe Electron Transport Chain

The Mitochondria

Endosymbiosis TheoryThe theory of endosymbiosis proposes that the mitochondria found in eukaryotic cells descended from ancestors of infection-causing bacteria. Krebs Cycle/ Citric Acid CycleIf Oxygen is present Pyruvate enters the mitochondria

Cyclical series of oxidation reactions that give off CO2 and produce 2 ATP

Produces 2 ATPs, 3NADH, and 2 CO2

Electron Transport ChainOccurs across inner mitochondrial membrane when oxygen is present.34 ATP and H2O producedUses NADH and e- from glycolysis and Krebs cycle to create ATPs and H2O

C6H12O6 + 6O2 6CO2 + 6H2O + 36-38 ATPs


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