Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 7, Problem 7TYK
Summary Introduction
Introduction:
Phosphofructokinase is a catalytic enzyme that plays a crucial role in controlling biochemical process. It plays an important role during glycolysis, in converting fructose-6-phosphate into fructose 1,6-biphosphate. It also converts ATP (adenosine triphosphate) into ADP (adenosine diphosphate) molecules. These steps help in controlling the glycolytic pathway.
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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.
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.
Chapter 7 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 7.1 - Prob. 1SBCh. 7.1 - Distinguish between cellular respiration and...Ch. 7.2 - Prob. 1SBCh. 7.2 - What is the redox reaction in glycolysis?Ch. 7.2 - How is ATP synthesized in glycolysis?Ch. 7.3 - Summarize the fate of pyruvate molecules produced...Ch. 7.4 - What distinguishes the four complexes of the...Ch. 7.4 - Prob. 2SBCh. 7.5 - Prob. 1SBCh. 7.5 - Prob. 2SB
Ch. 7.6 - Prob. 1SBCh. 7.6 - What are the types of molecules that are the...Ch. 7.6 - Prob. 3SBCh. 7 - What is the final acceptor for electrons in...Ch. 7 - Prob. 2TYKCh. 7 - Prob. 3TYKCh. 7 - Prob. 4TYKCh. 7 - Prob. 5TYKCh. 7 - Prob. 6TYKCh. 7 - Prob. 7TYKCh. 7 - Prob. 8TYKCh. 7 - Which of the following statements is false?...Ch. 7 - In the 1950s, a diet pill that had the effect of...Ch. 7 - Discuss Concepts Why do you think nucleic acids...Ch. 7 - A hospital patient was regularly found to be...Ch. 7 - 13. There are several ways to measure...Ch. 7 - Apply Evolutionary Thinking Which of the two...Ch. 7 - Prob. 1ITDCh. 7 - Prob. 2ITDCh. 7 - As CO2 concentrations increase in the atmosphere,...Ch. 7 - Prob. 4ITD
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