CELLULAR RESPIRATION

Breathing Cells

Three Stages

GLYCOLYSIS

KREBS

Reactants ProductsPyruvic Acid, CO2, NADHAcetyl CoA FADH2, 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 TRANSPORTElectron Transport Chain Reactant: 10 NADH, 2 FADH2 Products: electrochemical proton gradient across inner mitochondrial membrane

ChemiosmosisReactant: 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.