The electron transport chain: A. involves four protein complexes (I, II, III and IV) all of which are proton pumps. B. Uses ubiquinol as a mobile electron transporter to deliver electrons to complex III. C. intersects with the Krebs cycle, because isocitrate dehydrogenase is the same as complex III. D. increases in the concentration of hydrogen ions in the mitochondrial matrix.

Which is correct regarding electron transport chain complex III?Group of answer choicesContains Heme B which is capable of donating a pair of electrons.The overall stoichiometry of its reaction requires 2 cytochrome c for every ubiquinol.The oxidation of cytochrome C is coupled to the pumping of four protons into the mitochondrial intermembrane space.The lipid soluble cytochrome c transports electrons to complex IV.

Complex I of the electron transport chain accepts electrons from _____ A. Cyt c B. NADH C. CoQ D. ATP E. FADH2

The electron transport chain results in the generation of:A.a proton concentration gradient across the inner mitochondrial membrane, which drives phosphorylation of ADP.B.a proton concentration gradient across the inner mitochondrial membrane, which reduces NAD+ in a coupled reaction.C.an electron concentration gradient across the inner mitochondrial membrane, which drives phosphorylation of ADP.D.an electron concentration gradient across the inner mitochondrial membrane, which drives oxidation of NADH in a coupled reaction.Submit

The electron transport chain's main purpose is to create a proton gradient, which Complex V can use to synthesize ATP.TrueFalse

The electron transport system:Group of answer choicesoccurs in the mitochondria.follows the citric acid cycle.follows glycolysis.occurs in the mitochondria and follows the citric acid cycle.