where does glycolysis occur in a bacterial cell
Glycolysis
Firstly , the NADH + H generated by glycolysis has to be transferred to the mitochondrion to be oxidized , and thus to regenerate the NAD necessary for glycolysis to continue . However the inner mitochondrial membrane is impermeable to NADH and NAD . Use is therefore made of two `` shuttles '' to transport the electrons from NADH across the mitochondrial membrane . They are the malate - aspartate shuttle and the glycerol phosphate shuttle . In the former the electrons from NADH are transferred to cytosolic oxaloacetate to form malate . The malate then traverses the inner mitochondrial membrane into the mitochondrial matrix , where it is reoxidized by NAD forming intra-mitochondrial oxaloacetate and NADH . The oxaloacetate is then re-cycled to the cytosol via its conversion to aspartate which is readily transported out of the mitochondrion . In the glycerol phosphate shuttle electrons from cytosolic NADH are transferred to dihydroxyacetone to form glycerol - 3 - phosphate which readily traverses the outer mitochondrial membrane . Glycerol - 3 - phosphate is then reoxidized to dihydroxyacetone , donating its electrons to FAD instead of NAD . This reaction takes place on the inner mitochondrial membrane , allowing FADH to donate its electrons directly to coenzyme Q ( ubiquinone ) which is part of the electron transport chain which ultimately transfers electrons to molecular oxygen ( O ) , with the formation of water , and the release of energy eventually captured in the form of ATP .
Firstly , the NADH + H generated by glycolysis has to be transferred to the mitochondrion to be oxidized , and thus to regenerate the NAD necessary for glycolysis to continue . However the inner mitochondrial membrane is impermeable to NADH and NAD . Use is therefore made of two `` shuttles '' to transport the electrons from NADH across the mitochondrial membrane . They are the malate - aspartate shuttle and the glycerol phosphate shuttle . In the former the electrons from NADH are transferred to cytosolic oxaloacetate to form malate . The malate then traverses the inner mitochondrial membrane into the mitochondrial matrix , where it is reoxidized by NAD forming intra-mitochondrial oxaloacetate and NADH . The oxaloacetate is then re-cycled to the cytosol via its conversion to aspartate which is readily transported out of the mitochondrion . In the glycerol phosphate shuttle electrons from cytosolic NADH are transferred to dihydroxyacetone to form glycerol - 3 - phosphate which readily traverses the outer mitochondrial membrane . Glycerol - 3 - phosphate is then reoxidized to dihydroxyacetone , donating its electrons to FAD instead of NAD . This reaction takes place on the inner mitochondrial membrane , allowing FADH to donate its electrons directly to coenzyme Q ( ubiquinone ) which is part of the electron transport chain which ultimately transfers electrons to molecular oxygen ( O ) , with the formation of water , and the release of energy eventually captured in the form of ATP .