Activity of the respiratory electron transport chain: a. oxidizes pyruvate to acetyl CoA b. produces a proton gradient across the mitochondrial inner membrane c. produces a proton gradient across the mitochondrial outer membrane O d. transports protons through the porins of the mitochondrial outer membrane e. regenerates ATP by substrate-level phosphorylation

Activity of the respiratory electron transport chain: a. oxidizes pyruvate to acetyl CoA b. produces a proton gradient across the mitochondrial inner membrane c. produces a proton gradient across the mitochondrial outer membrane O d. transports protons through the porins of the mitochondrial outer membrane e. regenerates ATP by substrate-level phosphorylation

Name: 2 Activity of the respiratory electron transport chain:a. oxidizes pyr
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Description: 2 Activity of the respiratory electron transport chain:a. oxidizes pyruvate to acetyl CoAb. produces a proton gradient across the mitochondrial inner membraneC. produces a proton gradient across the mitochondrial outer membraned. transports protons t

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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Match the term with the best description. _____ mitochondrial matrix a. needed for glycolysis _____ pyruvate b. inner space _____ NAD+ c. makes many ATP _____ mitochondrion d. product of glycolysis _____ NADH e. reduced coenzyme _____ anaerobic f. no oxygen required
Which statement about the ETC is/are FALSE? A. Cytochrome c is freely moving and faces the mitochondrial matrix B. The four respiratory complexes move within the mitochondrial membrane C. CoQ & cytochrome c are not part of the complex but are e- carriers D. CoQ is freely moving within the hydrophilic part of the lipid component of the membrane
Which of the following statements is NOT true about the electron transport chain (ETC) and oxidative phosphorylation? (Only one answer applies) A. Oxidative phosphorylation requires the enzyme complexes to be soluble in the mitochondrial matrix. B. If the proton gradient is too high, electrons will not move through the ETC. C. The movement of electrons down the ETC only happens if protons are pumped out of the mitochondrial matrix. D. Oxidative phosphorylation requires the mitochondrial intermembrane space to be more positively charged than the matrix. E. The free energy of the proton gradient can be used to create high energy bonds.
Which of the following statements is NOT true about the electron transport chain (ETC) and oxidative phosphorylation? A. Oxidative phosphorylation requires the enzyme complexes to be soluble in the mitochondrial matrix. B. If the proton gradient is too high, electrons will not move through the ETC. C. The movement of electrons down the ETC only happens if protons are pumped out of the mitochondrial matrix. D. Oxidative phosphorylation requires the mitochondrial intermembrane space to be more positively charged than the matrix. E. The free energy of the proton gradient can be used to create high energy bonds.
When NADH and FADH2 are oxidized by the proteins in the electron transport chain, A) protons are pumped into the mitochondrial intermembrane space. B) hydrogen ions are pumped into the mitochondrial matrix. C) protons are pumped into the mitochondrial matrix. D) electrons are pumped into the cytoplasm.
H+ flow down their gradient from the intermembrane space into the mitochondrial matrix through _____________, the smallest known rotary motor, to make _____________. the electron transport chain; ATP ATP synthase; ATP the electron transport chain; NADH ATP synthase; O2
The mitochondrial membrane potential is an indicator of cell viability. Think about mitochondrial function and decide which of these statements best describes the mitochondrial membrane potential. a.) A voltage that reflects the movement of ATP across the outer mitochondrial membrane b.) A voltage that reflects the movement of protons across the outer mitochondrial membrane c.) A voltage that reflects the movement of protons across the inner mitochondrial membrane d.) A voltage that reflects the movement of ATP across the inner mitochondrial 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
Assuming that 3 H+ are transported per ATP synthesized in the mitochondrial matrix, the membrane potential difference is 0.18V (negative inside), and the pH difference is 2 unit (acid outside, basic inside), calculate the largest ratio of ATP/(ADP)(Pi) under which synthesis of ATP can occur. (gas constant 8.3J/mole, F is 96,485 kJ/V, T in , Co +273)
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.
Cyanide is a poisonous substance. Cyanide is a cytochrome c oxidase inhibitor that is competitive. The last enzyme of the electron transport chain in mitochondria is cytochrome c oxidase. One of the most common substrates for cytochrome c oxidase is oxygen.Would an increase in the concentration of oxygen affect the inhibitioncaused by cyanide?How would conditions in the mitochondrial intermembrane spacechange if cytochrome c oxidase and the electron transport chain are notfunctioning properly.. Explain why this change in conditions will be harmful to a cell.
During oxidative phosphorylation, the proton motive force that is generated by electron transport is used to: a. Generate the substrates (ADP and Pi) for the ATP synthase. b. Create a pore in the inner mitochondrial membrane. c. Oxidize NADH to NAD+. d. Induce a conformational change in the ATP synthase.