CELLULAR RESPIRATION Breathing Cells. Three Stages.

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Presentation transcript:

CELLULAR RESPIRATION Breathing Cells

Three Stages

GLYCOLYSIS

KREBS ReactantsProducts Pyruvic Acid, CO2, NADH Acetyl CoAFADH2, ATP Conversion of Pyruvate into Acetyl CoA Reactant: 2 pyruvate Products: 2 acetyl CoA, 2 NADH Kreb's cycle Reactant: 2 acetyl CoA Products: 6 NADH, 2 FADH2, 2 ATP

ELECTRON TRANSPORT Electron Transport Chain Reactant: 10 NADH, 2 FADH2 Products: electrochemical proton gradient across inner mitochondrial membrane Chemiosmosis Reactant: 34 ADP, 34 Pi Products: 34 ATP Total ATP (prokaryotes) = 38 ATP Total ATP (eukaryotes) = 36 ATP In eukaryotes the yield is only 36 ATP since the equivalent energy of 2 ATP has to be spent in order to move substances into the mitochondria.