Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Textbook Question
Chapter 9.4, Problem 2CC
WHAT IF? Ø In the absence of O2 as in question 1, what do you think would happen if you decreased the pH of the intermembrane space of the mitochondrion? Explain your answer.
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Check out a sample textbook solutionStudents have asked these similar questions
Compare the abundance of cristae in the mitochondria in Fig. 18.11b (677) with those in Fig. 20.21 (760). Is there a difference? What might this reflect in functional terms?
You are isolating mitochondria from insect cells and incubating in a test tube with 0.005 M FADH2, 0.05 M ADP and 0.05 M Pi. Assuming, these 3 can enter mitochondria at no cost,no glucose/products of glucose metabolism remain in the isolated mitochondria, and oxygen is present.
Part 1) If all expected reactions go to completion, how much ATP is expected formed?
(0 M)(0.02 M) (0.03 M) (0.05 M) (0.1 M) (0.005 M) (0.01 M) (0.015 M)
Part 2) The ratio of FADH2/FAD at completion of all expected reactions would be?
(2) (>>2) (0) (1)
Part 3) After completion of all expected reactions, ratio of H ion concentration inside vs. outside the mitochondrial inner membrane should be?
(<1) (~1) (>1)(0)
Please provide brief explanation
12. Use Figure 4 for questions a-c below.
114
ATP synthase
matrix
intermembrane space
Figure 4: Sketch of a mitochondrion
https://upload.wikimedia.org/wikipedia/commons/1/1a/Schema mitochondrion basic.svg
Bionet, CC BY-SA 4.0 , via Wikimedia Commons
a. Add to the sketch to show a H* concentration gradient in an active mitochondrion.
(Sketch more H* in the appropriate space. Sketch less H* in the appropriate space.)
4+
b. Sketch an arrow to represent the direction that protons flow (via diffusion) through
ATP synthase.
c. If the concentration of protons was equal on each side of the membrane, how would
that affect the flow of protons through ATP synthase? How would that affect ATP
production from glucose?
Chapter 9 Solutions
Campbell Biology (10th Edition)
Ch. 9.1 - Prob. 1CCCh. 9.1 - WHAT IF? If the following redox reaction...Ch. 9.2 - VISUAL SKILLS During the redox reaction in...Ch. 9.3 - Prob. 1CCCh. 9.3 - What process in your cells produce the CO2 that...Ch. 9.3 - VISUAL SKILLS The conversions shown in Figure...Ch. 9.4 - WHAT IF? What effect would an absence of O2 have...Ch. 9.4 - WHAT IF? In the absence of O2 as in question 1,...Ch. 9.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 9.5 - Consider the NADH formed during glycolysis. What...
Ch. 9.5 - WHAT IF? A glucose-fed yeast cell is moved from...Ch. 9.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 9.6 - Prob. 2CCCh. 9.6 - Prob. 3CCCh. 9.6 - VISUAL SKILLS During intense exercise, can a...Ch. 9 - Describe the difference between the two processes...Ch. 9 - Which reactions in glycolysis are the source of...Ch. 9 - What molecular products indicate the complete...Ch. 9 - Briefly explain the mechanism by which ATP...Ch. 9 - Prob. 9.5CRCh. 9 - Prob. 9.6CRCh. 9 - Level 1: Knowledge/Comprehension 1. The immediate...Ch. 9 - Prob. 2TYUCh. 9 - 3. The final electron acceptor of the electron...Ch. 9 - Prob. 4TYUCh. 9 - What is the oxidizing agent in the following...Ch. 9 - When electrons flow along the electron transport...Ch. 9 - Prob. 7TYUCh. 9 - Prob. 8TYUCh. 9 - MAKE CONNECTIONS The proton pump shown in Figures...Ch. 9 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 9 - DRAW IT The graph here shows the pH difference...Ch. 9 - EVOLUTION CONNECTION AIP synthases are found in...Ch. 9 - SCIENTIFIC INQUIRY In the 1930s, some physicians...Ch. 9 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 9 - SYNTHESIZE YOUR KNOWLEDGE Coenzyme Q (CoQ) is sold...
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- answer question #3arrow_forwardIn the early days of “mitochondriology,” P/O ratios were determined frommeasurements of volume of O2 taken up by respiring mitochondria andchemical assays for disappearance of inorganic phosphate. Now, however, itis possible to measure P/O ratios simply with a recording oxygen electrode.How might this be done?arrow_forwardanswer #2arrow_forward
- answer #1, A-Carrow_forwardco S Question #6. On the right is a schematic showing the structure of complex V (ATP Synthase). The various subunits are labeled. 6A Label the figure to show the location of the mitochondrial matrix αβλαβ Y 6B On the figure indicate the direction of proton flow across the membrane in the direction of ATP synthesis. Make sure to specifically indicate through which portion of the complex the protons move. E Ab, a a cc ccc Inner membrane 6C List the specific subunits in the complex that rotate as protons flow through the complex (select from: a, b2, c, a, ß, y, 8, ɛ) 6D Rotation occurs in 120° steps. Briefly explain why this is consistent with the bind-and-change mechanism that produces ATP. In your answer, make sure to indicate the number of active sites in the complex and how rotation alters their ability to promote catalysis.arrow_forwardWhat would be the expected pHs of the matrix and intermembranespace of the mitochondrion? What about the stroma and thylakoidlumen of the chloroplast? Explain your answers.arrow_forward
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