Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 9.5, Problem 2CC
WHAT IF? Ø A glucose-fed yeast cell is moved from an aerobic environment to an anaerobic one. How would its rate of glucose consumption change if ATP were to be generated at the same rate?
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A glucose-fed yeast cell is moved from an aerobic environment to an anaerobic one. How would its rate of glucose consumption change if ATP were to be generated at the same rate?
Which of the following among A- D is incorrect regarding the proton motive force and ATP synthase (ATPase)?
A) O The F1 subunit of the ATPase binds ADP and phosphate, forms ATP, and then releases ATP
B) O Increasıng the difference in pH across the membrane of a bacterial cell would likely increase its proton motive force.
O O The ATPase is a molecular motor that moves as protons flow through it.
D) O Increasing the negative charge inside a bacterial cell would likely increase the proton motive force.
E) O All of A- D is correct.
A glucose-fed yeast cell is moved from an aerobic environment to an anaerobic one. For the cell to continue to generate ATP at the same rate, approximately how much glucose must it consume in the anaerobic environment compared with the aerobic environment?
Chapter 9 Solutions
Campbell Biology
Ch. 9.1 - Compare and contrast aerobic and anaerobic...Ch. 9.1 - WHAT IF? If the following redox reaction...Ch. 9.2 - Prob. 1CCCh. 9.3 - Prob. 1CCCh. 9.3 - What process in your cells produce the CO2 that...Ch. 9.3 - Prob. 3CCCh. 9.4 - Prob. 1CCCh. 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 - Prob. 4CCCh. 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 - Prob. 3TYUCh. 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 - Prob. 9TYUCh. 9 - Prob. 10TYUCh. 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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- What is ATP? Where is the energy held in this molecule? Describe the generalized reversible reaction for release of energy from ATP and explain the role of ATP in the cell. What organelle is responsible for aerobic production of ATP? What are the other two methods of ATP production in the cells? What is cellular respiration?arrow_forwardWhat is a difference between Substrate-level Phosphoratation, and Oxidative Phosphoralation? Question options: Substrate-level Phosphoratation only occurs in the cytoplasm, not in the mitochondria In Oxidative Phosphorylation, ADP is oxidized, forming ATP Oxidative-level Phosphorylation only occurs in the mitochondria, not in the cytoplasm. Substrate-level Phosphorylation can only occur in the presence of oxygenarrow_forwardTable 7: ATP Yield from Aerobic Respiration (for 1 Glucose Molecule) in a Eukaryotic Cell # of ATPS Generated from NADH and FADH, through Oxidative # of ATPS Generated through Substrate-Level Phosphorylation # of NADH and FADH2 Produced Gross Subtotal of ATPS Produced Process Phosphorylation NADH: FADH2: NADH: FADH2: Glycolysis Transition Step NADH: FADH2: GROSS TOTAL of ATPS Produced # of ATPS Spent NET TOTAL of ATPS Produced Krebs Cyclearrow_forward
- 3 Diagram A below illustrates schematically a classic experiment designed to test the chemi- osmotic hypothesis. Phospholipid vesicles were made to contain beef heart mitochondrial ATP syn- thase and bacteriorhodopsin, a light driven proton pump isolated from Halobacterium holobium. Under light illumination, proton translocation by bacteriorhodopsin results in ATP synthesis when ADP and inorganic phosphate (Pi) are added to the suspension of vesicles. Diagram B shows a plot of the rate of ATP synthesis as a function of the proton gradient ApH. Bacteriorhodopsin in synthetic vesicle 100F A outside inside 5아 Fo F1 0.3 0.6 0.9 1.2 A pH (a) how this differs from its orientation in mitochondria. Given the orientation of the components of ATP synthase complex in diagram A, describe (b) cavity of the vesicle become the region of low proton concentration or the region of high proton con- centration? Explain your reasoning. Under light illumination to activate bacteriorhodopsin to drive ATP…arrow_forward. An aerobic prokaryotic cell is able to generate a maximum of how many molecules of ATP from the complete catabolism of one glucose molecule into carbon dioxide and water? 2 molecules of ATP 4 molecules of ATP 6 molecules of ATP 30 molecules of ATP 32 molecules of ATParrow_forwardWould you expect ATP to inhibit or stimulate activity of this enzyme in the glycolysis pathway? Why? What is the immediate energy source that drives ATP synthesis by ATP Synthase during oxidative phosphorylation? Where is CO2 produced in aerobic cell respiration? What would happen to chemiosmosis if the pH in the inner membrane space was decreased (lower)? What would happen if there was an absence of O2 in the electron transport chain? How many ATP’s are formed in the process phosphoglyceraldehyde also known as PGAL? Fatty acid chains after subjected to degradative enzymes in the intestines are hydrolyzed (hydrolysis) into 2 Carbon acetic acid fragments (Each fragment becomes an acetyl Co-A molecule). What stage of cellular respiration will this product of lipolysis enter? How many ATP can one fragment produce in cellular respiration? Calculate the number of ATP harvested from complete oxidation (breakdown) of an 18 carbon fatty acid? Calculate the number of ATP harvested from…arrow_forward
- Cells use two ways of storing potential energy: 1) as concetration gradients and 2) in molecules. A) Explain how energy can be stored in these two forms and how it can be used to do the work. B) Propose an analogy that can explain each these forms of energy storage using everyday items.arrow_forwardConsider the following types of cell and their respective conditions: a cell with ATP synthase deficiency* a yeast cell undergoing fermentation but with defective alcohol dehydrogenase (hint: In yeast, alcohol dehydrogenase is responsible for shuttling reducing equivalents of cytosolic NADH to the mitochondria.)* a brain cell with non-functional Complex II of the electron transport chain* * Assume that the deficiency is isolated and will not influence the function of other respiration components In these cells/tissues, determine the following from the catabolism of the 2.5 moles of the disaccharide lactose (will be hydrolyzed first to yield glucose and galactose). a. Net ATP from glycolysis b. ATP from oxidative decarboxylation (if applicable) c. ATP formed from Krebs cycle (if applicable) d. Total net ATParrow_forwardCHCASE Dashboard A student conducts two experiments to observe the effects of different factors on ATP production during aerobic cellular respiration. In the first experiment, the student isolates mitochondria in a test tube, adds oxygen to the test tube, and measures the amounts of ATP produced at three temperatures. In a second experiment, the student keeps the temperature the same and varies the concentration of oxygen added to the test tube for each trial, The student records all data in the table shown. Ite Ite Ite Experiment Trial Temperature Oxygen Concentration (°C) ATP Produced (mol/L) (mol/L) Iter 1 25 15 1.5 Iter 1 30 15 1.8 Item 35 15 2.6 Iter 35 25 3.5 Iter 2 2 35 35 3.8 Item 3 35 45 4.2 Based on the experiments, which statement can be concluded concerning ATP production during aerobic cellular respiration? O Increasing the temperature or the oxygen concentration improves the efficiency of ATP production during aerobic cellular respiration. O Decreasing the temperature or…arrow_forward
- Assume a cell is respiring aerobically and is using glucose as an energy source. What is the ultimate fate of each of the 6 carbon atoms in a glucose molecule that begins the aerobic pathway (i.e., what happens to each of the carbons and where does it happen)?arrow_forwardCONNECT How are the endergonic reactions of the first phase of glycolysis coupled to the hydrolysis of ATP, which is exergonic? How are the exergonic reactions of the second phase of glycolysis coupled to the endergonic synthesis of ATP and NADH?arrow_forwardWhat would be the effect on ATP production during chemiosmosis and oxidative phorphorylation, if the pH within the inner membrane space of the mitochondrion were decreased, assuming no effect of pH on the structure of proteins in the membrane? a) it would increase b) it would decrease c)it would stay the samearrow_forward
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