Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Question
Chapter 8.2, Problem 5LO
Summary Introduction
To explain: Chemiosmosis and the way by which a gradient of protons is established across the inner mitochondrial membrane.
Concept introduction: Aerobic respiration is a type of
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Explain the organization of electron carriers in mitochondrial membrane.
Predict the outcome of a mitochondrial membrane that is more permeable to hydrogen ions than normal.
answer choices
A.) Increased levels of inorganic phosphate in the mitochondrial matrix
B.) Reduced formation of water
C.) Reduced activity of electron transport chain
D.) Increased activity of ATP synthase
Explain why an intact, impermeable mitochondrial membrane is essential forATP synthesis.
Chapter 8 Solutions
Biology (MindTap Course List)
Ch. 8.1 - Write a summary reaction for aerobic respiration...Ch. 8.1 - Prob. 1CCh. 8.1 - Prob. 2CCh. 8.2 - Prob. 2LOCh. 8.2 - Prob. 3LOCh. 8.2 - Add up the energy captured (as ATP, NADH, and...Ch. 8.2 - Prob. 5LOCh. 8.2 - Prob. 6LOCh. 8.2 - Prob. 1CCh. 8.2 - Prob. 2C
Ch. 8.2 - What are the roles of NAD+, FAD, and oxygen in...Ch. 8.2 - Prob. 4CCh. 8.3 - Summarize how the products of protein and lipid...Ch. 8.3 - Prob. 1CCh. 8.3 - Prob. 2CCh. 8.3 - Prob. 3CCh. 8.4 - Compare and contrast anaerobic respiration and...Ch. 8.4 - What is the fate of hydrogen atoms removed from...Ch. 8.4 - What accounts for the ATP yield of fermentation...Ch. 8.4 - Is chemiosmosis involved in fermentation? in...Ch. 8 - A chemical process during which a substance gains...Ch. 8 - The reactions of _____ take place within the...Ch. 8 - Before pyruvate enters the citric acid cycle, it...Ch. 8 - In the first step of the citric acid cycle, an...Ch. 8 - Which of the following is the major source of...Ch. 8 - The aerobic part of aerobic cellular respiration...Ch. 8 - Prob. 7TYUCh. 8 - A net profit of only 2 ATPs can be produced...Ch. 8 - When deprived of oxygen, yeast cells obtain energy...Ch. 8 - Which of the following is a correct ranking of...Ch. 8 - Prob. 11TYUCh. 8 - CONNECT Explain why the proton gradient formed...Ch. 8 - CONNECT How are the endergonic reactions of the...Ch. 8 - PREDICT Could the inner mitochondrial membrane...Ch. 8 - Prob. 15TYUCh. 8 - Prob. 16TYUCh. 8 - EVOLUTION LINK The reactions of glycolysis are...Ch. 8 - Prob. 18TYU
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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 phosphorylationarrow_forwardMatch each item with the correct statement below concerning the electron transport chain and chemiosmosis. You can choose a selection more than once. Question 61 options: Where do protons re-enter the mitochondrial matrix? What molecule is transported by facilitated diffusion? What are the electron donor molecules at the beginning of the chain? In what order are the components of the chain arranged? Where do electrons, protons, and oxygen meet to become water? What is the first protein complex of the chain? What moves into the intermembrane space? What accepts the electrons at the end of the chain? 1. increasing electronegativity 2. decreasing electronegativity 3. ATP 4. oxygen 5. protons 6. NADH/FADH2 7. NADH dehydrogenasearrow_forwardThe 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 membranearrow_forward
- What would be the effect on ATP production of decreasing the pH inside the mitochondrial matrix? Explainarrow_forwardthe shuttle mechanism which transports fatty acids into the mitochondrial matrix uses as the carrier moleculearrow_forwardWhat is the minimum voltage drop for individual electron transfer events in the mitochondrial electron transport system that is necessary for ATP synthesis?arrow_forward
- The four complexes of the electron transport chain use the energy of electrons stored in reducing agents to create a concentration gradient of protons (H*) across the mitochondrial inner membrane. Give the number of protons pumped into the intermembrane space by each of the four complexes: complex I: complex II: complex III: complex IV:arrow_forwardSelect the correct answer : Which of the following statements best describes the chemiosmotic theory of ATP synthesis by the electron transport system? A) As the protons pass through the system, electrons are moved from the mitochondrial matrix to the intermembrane space and ATP is formed as the electrons move back to the matrix through only one phosphorylation site. B) As the electrons pass through the system, ATP is synthesized at three different phosphorylation sites. C) As the electrons pass through the system, protons are moved from the mitochondrial matrix to the intermembrane space and ATP is formed as the protons ;move back to the matrix through the three different phosphorylation sites. D) As the electrons pass through the system protons are moved from the mitochondrial matrix to the intermembrane space and ATP is formed as the protons move back to the matrix through only one phosphorylation site.arrow_forwardIn 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?arrow_forward
- What thermodynamic force drives the transport of ADP and Pi into the mitochondrial matrix for ATP synthesis?arrow_forwardWhy does ATP production require an intact mitochondrial membrane?arrow_forwardWhich directions across the mitochondria must H+, ATP, ADP, and Pi travel during active mitochondrial ATP synthesis?arrow_forward
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