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Name: Which statement about the ETC is/are FALSE? A. Cytochrome c is freely
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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- carrie

Science

Biochemistry

Which statement about the ETC is/are FALSE?

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 10RE: Using the answer code on the right, indicate which form of energy production is being described: 1....

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Using the answer code on the right, indicate which form of energy production is being described: 1. takes place in the mitochondrial matrix 2. produces H2O as a by-product 3. results in a rich yield of ATP 4. takes place in the cytosol 5. processes acetyl-CoA 6. takes place in the mitochondrial innermembrane cristae 7. converts glucose into two pyruvate molecules 8. uses molecular oxygen 9. accomplished by the electron transport system and ATP synthase (a) glycolysis (b) citric acid cycle (c) oxidative phosphorylation
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
What is the major route for protons moving from the inter membrane space back into the mitochondrial matrix during oxidative phosphorylation? 1. Protons carried across the membrane by a molecule of dinitrophenol 2. Protons are transported along with ADP by the ATP/ADP translocase.3. Protons enter the half channel in subunit a facing the inter membrane space and exit via the half channel facing the mitochondrial matrix. Choose 1 correct answer explain? Give typing answer with explanation and conclusion
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
In the 1930s, some physicians prescribed low doses of a compound called dinitrophenol (DNP) to help patients lose weight. This unsafe method was abandoned after some patients died. DNP uncouples the chemiosmotic machinery by making the lipid bilayer of the inner mitochondrial membrane leaky to H+. Chemical agents that cause this effect are called uncouplers. Explain how this could cause weight loss and also death. Considering the danger, is there any use for compounds like DNP or other uncouplers?
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.
Label the diagram and explain the salient feature that is happening in each item. For the complexes and the mobile carriers, kindly give their alternative names Electron Transport Chain Intermembrane space Inner mitochondrial membrane Intermembrane space Mitochondrial matrix 1 2 FADH₂ NADH NAD + H Mitochondrial matrix 1. 2. 3. 4. 5. 6. 7. 6 FAD H₂O 2H* + 1/20₂ Inner mitochondrial membrane Name of the Transporter 500 2e- 13040 ALLD LC ATP ADP Essential Features
When hydrogen ions are pumped across the inner membrane into the intermembrane space, this results in a. restoration of the Na+/K+ balance across the membrane b. creation of a proton- motive force c. reduction of NAD+ d. direct formation of ATP e. lowering of pH in the mitochondrial matrix
CHOOSE THE CORRECT LETTER Which of the following conditions promote the synthesis of ATP through the electron transport chain?A.proton pump from outer mitochondrial membrane to inner mitochondrial membraneB. proton pump from matrix to inner mitochondrial membraneC. proton pump from inner mitochondrial membrane to outer mitochondrial membraneD. proton pump from inner mitochondrial membrane to matrix
Fill in the blanks using the following words/acronyms: protons; Electron Transport Chain; oxygen; inner; Cytochrome c; NADH; ATP synthase; shuttle; ATP (note: the same word/acronym may be used more than one time) Complex I transfers electrons from to Coenzyme Q; and this transfer leads to the extrusion of from the mitochondrial matrix to the outside face of the mitochondrial membrane. Complex II allows the transfer of electrons from succinate to Coenzyme Q. Coenzyme Q is an electron which transfers electrons to Complex III. Electrons transfer from Complex III is associated with translocation. These electrons are then accepted by ; which transfers them to Complex IV. are also translocated at the level of Complex IV during electrons transfer; allowing the reduction of the final electron acceptor of the which is . ll the translocated are then channeled through the pore of the ; providing the driving force for release from the Enzyme complex.
Can you please match the option that is the best fit for each word? Biotin Bicarbonate and ATP Oxaloacetate Malate transport Cori Cycle a. Reactants for adding carboxy group to biotin b. Mechanism for "moving" NADH equivalents from mitochondrial matrix to cytosol c. 4 carbon acid converted to 3 carbon, phosphoenolpyruvate with release of CO2 d. A mechanism to convert lactate produced in muscle to glucose in the liver, which is then transported into circulation e. Cofactor for pyruvate carboxylase