Which of the following statements about the electron transport chain is TRUE? O The movement of protons down a concentration gradient is an endergonic process. ATP synthesis associated with the electron transport chain is an example of substrate level phosphorylation. The electron transport chain can be found in the mitochondria of aerobic bacteria and other cells. Protons are pumped out of the mitochondrial matrix by the complexes of the electron transport chain. O The proton gradient established during electron transport is a form of potential energy.

Which of the following statements about the electron transport chain is TRUE? O The movement of protons down a concentration gradient is an endergonic process. ATP synthesis associated with the electron transport chain is an example of substrate level phosphorylation. The electron transport chain can be found in the mitochondria of aerobic bacteria and other cells. Protons are pumped out of the mitochondrial matrix by the complexes of the electron transport chain. O The proton gradient established during electron transport is a form of potential energy.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter7: Cellular Respiration: Harvesting Chemical Energy

Section: Chapter Questions

Problem 4TYK

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As electrons fall from one complex to another in the Electron Transport Chain, the energy they release powers which of the following processes? O The reduction of NAD+ and FAD. The production of ATP. Catalyzing the anabolic reaction of oxygen bonding with hydrogen to create water. O Transporting H+ ions across the inner membrane.
Which of the following statements about the generation of ATP in the electron transport chain is correct? a. The generation of ATP from ADP coupled to electron transfer occurs by substrate level phosphorylation as in glycolysis. b. ATP synthase generation of ATP involves a rotating structure inside the inner mitochondrial membrane. c. ATP synthase generation of ATP involves a rotating structure outside the inner mitochondrial membrane. d. Electron transport generates a proton gradient across the outer mitochondrial membrane.
Which of the following BEST describes the function of the electron transport system? Energy absorbed by the cytochromes in the system is converted to ATP. The system functions to produce ATP by chemiosmosis in the absence of oxygen. Energy lost from high-energy electrons causes the oxidation of glucose. Energy lost from high-energy electrons results in ATP production by chemiosmosis.
Which of the following statements describes the end step for the electron transport chain? A. H+ ions flow down the gradient to generate ATP B. electrons are transferred to NADH and FADH2 for chemiosmosis C. electrons are transferred to oxygen, causing it to split and take up H+ ions, which form water D. H+ are pumped across the inner membrane of mitochondria to establish an electrochemical gradient
Which of the following are stages of electron transfer phosphorylation? Select all that apply. Oxygen collects electrons from the end of the electron transfer chain to combine with hydrogen ions to form water. The electron transfer chain fuels active transport of hydrogen ions from the matrix to the intermembrane space. Hydrogen ion flow through an ATP synthase produces ATP. The NADH and FADH produced in the prior steps of aerobic respiration deliver electrons and hydrogen ions to the electron transfer chain.
The proton motive force is a result of ________. the flow of protons within the inner mitochondrial membrane a combination of an electrical potential and a chemical potential the flow of electrons from the matrix to the inner membrane space all of the above Oxidative phosphorylation requires all of the items listed below except... a terminal electron acceptor which is O2 in mitochondria. a matrix more positively charged than the intermembrane space. the flow of electrons from NADH and QH2 in the membrane. enzyme complexes embedded in a membrane. ATP synthase in the correct position in the membrane
ATP production during the Electron Transport Chain is driven by which of the following? A. Movement of H+ ions across mitochondrial membranes via ATP synthase B. Movement of electrons down a gradient of charge C. Oxygen accepting H+ ions D. NADH and FADH2 donating phosphate to ADP E. Release of CO2
ATP synthase attaches a phosphate group to ADP, forming ATP .This process requires energy. The energy is provided by electron carrier molecules in the electron transport system that pump ___________into the intermembrane space (also called outer compartment). When these move back into the ___________, they must move through ATP synthase. This movement through ATP synthase provides the power needed by ATP synthase to push the third phosphate group onto ADP. protons (H+ ions); mitochondrial matrix protons; intermembrane space electrons; intermembrance space electrons; mitochondrial matrix
Which of the following statements concerning oxidative phosphorylation is false? Group of answer choices: The electron transport chain generates an electrochemical gradient that drives the production of ATP. ATP synthase with fewer subunits in its c ring will produce more ATP per proton. A “loose” β subunit of ATP synthase becomes a “tight” site as it produces ATP. When the supply of NADH and QH2 (ubiquinol) decreases, ATP synthase produces more ATP.
Which of the following statements is true?a) the ATP synthase adds electrons directly to ADP to make ATP b) acetyl CoA produced in the citric acid cycle carries electrons to the electrontransport chainc) the electron transport chain pumps protons from the cytosol into the inter-membrane space of mitochondriad) carbon monoxide is an electron transport chain blocker
which of the following processes generates a proton-motive force in mitochondira. -lower the ph in the mitochondiral matrix -pumping of hydrogen ions from the mitochondiral matrix across the inner membrane and into intermembrane -the flow of protons throught ATP synthase down their concentraion gradient -the reduction of NAD+ by the first electon carrier in the electron trasport chain
Which of the following statements about cellular respiration is TRUE in eukaryotes? A. For every molecule of NADH oxidized in the electron transport chain, 1 molecule of ATP is produced. B. ATP synthase harnesses the flow of protons (hydrogen ions = H+) from the mitochondrial matrix to the intermembrane space to produce ATP. C. ATP synthase transduces the flow of protons (hydrogen ions = H+) from the intermembrane space to the mitochondrial matrix into kinetic (mechanical) energy D. H2O is the final electron acceptor in the electron transport chain, being oxidized to O2 and H+. E. All of the above are true