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 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

Name: Which statement about the ETC is/are FALSE?A. Cytochrome c is freely m
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Description: Which statement about the ETC is/are FALSE?A. Cytochrome c is freely moving and faces the mitochondrial matrixB. The four respiratory complexes move within the mitochondrial membraneC. CoQ & cytochrome c are not part of the complex but are e- carrier

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter7: Releasing Chemical Energy

Section: Chapter Questions

Problem 15SA: Match the terms with the best description. ___ mitochondrial matrix a. needed for glycolysis ___...

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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 of the following statements is a lie? Select one: a.The formation of water aids in establishing the ion gradient between the inner matrix and intermembrane space. b.Every protein complex in the electron transport chain is involved in the direct pumping of H+ in the intermembrane space. c.There is an existing electrochemical gradient between the intermembrane space and the inner mitochondrial matrix.
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.
Which of the following statements is true? A. The NADH dehydrogenase complex can pump more protons than can the cytochrome b-c1 complex. B. The pH in the mitochondrial matrix is higher than the pH in the intermembrane space. C. The proton concentration gradient and the membrane potential across the inner mitochondrial membrane tend to work against each other in driving protons from the intermembrane space into the matrix. D. The difference in proton concentration across the inner mitochondrial membrane has a much larger effect than the membrane potential on the total proton-motive force.
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
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.
In the Electron Transport Chain:(a). Upon the transfers, what is the final recipient of these electrons?(b). What is the compound obtained upon the completion of electron transportation?(c). What causes the changes in pH between the inner mitochondrial membrane during the electron transfer?
Why do humans breathe?a. To eliminate CO2b. To support aerobic respiration in mitochondriac. To keep the respiratory surface dryd. Both a and b are correct
The presence of uncoupling protein (thermogenin) in brown fat mitochondria: a. Slows down the citric acid cycle b. Halts mitochondrial ATP formation, but allows continued O2 consumption c. Halts all mitochondrial metabolism d. Allows continued mitochondrial ATP formation, but halts O2 consumption
Which of the following statements concerning ATP synthesis in mitochondria is FALSE? a. interruption of the flow of electrons from NADH to oxygen would decrease ATP synthesis b. making the inner mitochondrial membrane permeable to H+ would decrease ATP synthesis c. the energy liberated by the electron-transport chain is used to pump H+ ions into the IM-space d. the movement of H+ through a special channel enzyme (synthase) results in ATP synthesis e. when protons move from the matrix to the IM-space, ATP is made from ADP + Pi
Which of the following statements regarding CoQ is false a. It resides in the inner mitochondrial membrane b. It helps to pump protons after getting oxidized by complex 2 c. It is an electron carrier common to both nadh and fadh2 electron transport chains d. It is a hydrophobic protein