CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
3rd Edition
ISBN: 9780135191811
Author: Urry
Publisher: PEARSON
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Chapter 7.4, Problem 2CC
Summary Introduction
To explain:
What will be the result of decreasing the
Concept introduction:
After the completion of the electron transport chain (ETC), oxidative phosphorylation happens on the basis of the chemiosmosis which states that an
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If isolated mitochondria are incubated with asource of electrons such as succinate, but without oxygen,electrons enter the respiratory chain, reducing each of theelectron carriers almost completely. When oxygen is thenintroduced, the carriers become oxidized at different rates(Figure Q14–1). How does this result allow you to order the electron carriers in the respiratory chain? What is theirorder?
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?
. Aerobic respiration, used by the mitochondria of eukaryotic cells, is best represented by which of the following balanced equations?
6CO2 + 12H2S g C6H12O6 + 6S2 + 6H2O
C6H12O6 + 6O2 + 6H2O g 6CO2 + 12H2O
C12H22O11 + H2O g C6H12O6 + C6H12O6
6CO2 + 12H2O g C6H12O6 + 6O2 + 6H2O
C6H12O6 + C6H12O6 g C12H22O11 + H2O
Chapter 7 Solutions
CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
Ch. 7.1 - Compare and contrast aerobic and anaerobic...Ch. 7.1 - Name and describe the two ways in which ATP is...Ch. 7.1 - Prob. 3CCCh. 7.2 - During step 6 in Figure 7.9, which molecule acts...Ch. 7.3 - Name the molecules that conserve most of the...Ch. 7.3 - Prob. 2CCCh. 7.4 - Prob. 1CCCh. 7.4 - Prob. 2CCCh. 7.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 7.5 - Prob. 1CC
Ch. 7.5 - WHAT IF? A glucose-fed yeast cell is moved from an...Ch. 7.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 7.6 - Prob. 2CCCh. 7.6 - WHAT IF? During intense exercise, can a muscle...Ch. 7 - The immediate energy source that drives ATP...Ch. 7 - Which metabolic pathway is common to both...Ch. 7 - In mitochondria, exergonic redox reactions A. are...Ch. 7 - The final electron acceptor of the electron...Ch. 7 - What is the oxidizing agent in the following...Ch. 7 - When electrons flow along the electron transport...Ch. 7 - Most co, from catabolism is released during A....Ch. 7 - DRAW IT The graph here shows the pH difference...Ch. 7 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 7 - Prob. 10TYUCh. 7 - FOCUS ON EVOLUTION ATP synthases are found in the...Ch. 7 - Prob. 12TYUCh. 7 - Prob. 13TYU
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- answer #2arrow_forwardanswer question #3arrow_forwardCan you explain why when the pH level was changed from 0 to 5, the ATP production was affected despite the supply of glucose being constant at just 1 mol for both treatments (At 0 pH and 5 pH). What is the reason on why this could have happened?arrow_forward
- PFor each of the following experiments, tell me whether you would expect the rate of O₂ consumption and ATP synthesis to increase, decrease or remain the same (respectively). Assume there is plenty of O₂ around. (a) Succinate is suddenly added to mitochondria that have no other oxidizable substrates (Assume that there are ADP and Pi in mitochondria). (b) ADP is not allowed to pass into the mitochondrial matrix. (c) 2,4 Dinitrophenol (an uncoupler) is added.arrow_forwardAs protons (H+) pass through the mitochondria inner membrane… Question 10 options: a) Protons follow their concentration gradient. b) All the potential energy contained in the proton gradient is converted into ATP. c) Some of the potential energy contained in the proton gradient is converted into ATP and some is released as heat (i.e., unusable energy). d) Protons go up in potential energy level and ∆G > 0. e) A and Carrow_forwardFigure 4.15 Cyanide inhibits cytochrome c oxidase, a component of the electron transport chain. If cyanide poisoning occurs, would you expect the pH of the intermembrane space to increase or decrease? What affect would cyanide have on ATP synthesis?arrow_forward
- Plz do Asap....!arrow_forwardIt has been estimated that mitochondria occupy 20% of the volume in the human body. For a 70- kg adult, the average number of mitochondria has been estimated to be 1 × 10 (10,000 trillion). Using this information, provide a rough estimate of the average mass of a mitochondrion.arrow_forwardThe following diagrams illustrate the two aqueous spaces and the inner membrane of a mitochondrion. In which diagram is the relative concentration of protons auch that ATP synthesis could occur if ATP synthase were present? (Gold spheres represent protons.) 圈圈圈圈圈 A B D E OA OB OC OD OE intermembrane space Anner membrane matriearrow_forward
- answer #1, A-Carrow_forward31arrow_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_forward
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