Which of the following statements about the proton gradient in the mitochondria is correct?A. The proton gradient is established across the inner mitochondrial membrane.B. Protons are pumped from the mitochondrial matrix to the intermembrane space during electron transport.C. The proton gradient drives ATP synthesis through the enzyme ATP synthase.D. The energy for establishing the proton gradient comes from ATP hydrolysis.Question 5Answera.B and D onlyb.A, B, and C onlyc.A, B, C, and Dd.A and D only

6. Electron movement results in the establishment of a proton gradient across the inner mitochondrial membrane. The proton motive force then provides the energy for ATP formation. a. How are protons shifted from the matrix to the intramembrane space? b. How is the proton gradient harnessed for ATP formation? c. How does ATP reach the cellular compartment/s where biosynthesis is occurring?

Within a mitochondrion, in what direction do protons move through ATP synthase?Group of answer choicesFrom both the cytosol and mitochondrial matrix into the intermembrane space.From the cytosol into the intermembrane spaceFrom the intermembrane space into the mitochondrial matrixFrom the mitochondrial matrix into the intermembrane spaceFrom the intermembrane space into the cytosol

Which of the following statements about the electron transport chain and ATP production in the mitochondria is false?Group of answer choicesAny drug that inhibits the ATP synthase will also inhibit the flow of electrons in the ETC.For oxidative phosphorylation to occur, it is essential to have a membrane that is impermeable to protons except through specific proteins pores or protein complexesThe yield of ATP per mole of fuel depends on the type of molecule being catabolized.Some complexes of the respiratory chain pump protons into the matrix to create an electrochemical gradient.Exergonic electron transfer provides the energy for proton pumping.

Which of the following statements about the electron transport chain in mitochondria is NOT correct? A) Electrons increase their free energy at each step along the transport chain B) The final electron acceptor is oxygen C) Transporters alternate between reduced and oxidized states by accepting and donating electrons D) Electron transporters are associated with the inner mitochondrial membrane E) Electrons transported along the chain come from NADH and FADH2 molecules

Which of the following events could directly increase the pH of the mitochondrial matrix?A.Permeabilization of the inner mitochondrial membraneB.Increased electron transport chain activityC.Increased ATP synthase activityD.Inhibition of the citric acid cycle