Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 7.5, Problem 2CC
WHAT IF? 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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WHAT IF? What would happen if a molecule that inactivatedphosphodiesterase were introduced into the cell?
Q36. The picture below shows a preparation of isolated thylakoid membranes suspended in a buffer at pH 8. The preparation is in complete darkness.
Which of the following is required in order for the thylakoids to generate ATP?
A. Addition of ADP and phosphate to the buffer.
B. Incubation in the light plus ADP and phosphate.
C. Incubation in the light plus addition of ADP, phosphate and NADP+.
D. Isolated thylakoid membranes are not able to synthesize ATP.
WHAT IF? A classmate proposes that mitochondria andchloroplasts should be classified in the endomembranesystem. Argue against the proposal.
Chapter 7 Solutions
Campbell Biology in Focus (2nd Edition)
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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- WHAT IF? Mitochondrial genes are critical to the energymetabolism of cells, but mitochondrial disorders caused bymutations in these genes are generally not lethal. Why not?arrow_forwardWHAT IF? What would happen if a mutationin protein kinase 2 made it incapable of beingphosphorylated?arrow_forwardQ1: Define ATP in your own words. Q2: How is ATP involved in anabolism and catabolism? (Hint: Review Figure 5.3.) Q3: Arsenic disrupts ATP production. Why would this characteristic cause it to be a potent poison?arrow_forward
- Q1: What source of energy would plants use for anabolic reactions? Would an animal use the same kind of energy? Q2: What source of energy would plants release in catabolic reactions? Would an animal release the same kind of energy? Q3: Create a mnemonic or jingle that helps you remember the difference between anabolism and catabolism.arrow_forwardQ2. It has been estimated that two high-energy phosphate bonds must be expended to incorporate one glucose molecule into glycogen. Why is glucose stored in muscle and liver in the form of glycogen, and not as individual glucose molecules? In other words, why is it advantageous for a cell to expend metabolic energy to polymerize glucose molecules?arrow_forwardQ8. Which of the following statements is thought to be the underlying reason for why a typical eukaryotic cell is more complex than a typical aerobic bacterial cell? A. A eukaryotic cell has a greater plasma membrane area / cell volume ratio than a bacterium. B. A eukaryotic cell has a greater number of electron transport chains than a bacterium. C. An aerobic bacterium lacks membranes required for electron transport. D. An aerobic bacterium cannot undergo oxidative phosphorylation.arrow_forward
- Q9. Which chemical characteristic makes phosphoenolpyruvate (PEP) unusual? A. PEP regulates the activity of phosphofructokinase. B. PEP can carry out redox reactions. C. PEP provides high-energy electrons to make ATP. D. PEP supplies a high-energy phosphate to phosphorylate ADP.arrow_forwardQ. 1 Which enzyme catalyzes the first step of glycolysis? explain the whole pathway in detail?arrow_forwardQ)Starting as a lipid in some holiday prime rib, trace the path that energy and biomass make as that lipid is consumed by a college freshman, transported to a cell in the liver and converted into a carbohydrate, and finally as that carbohydrate is burned for energy in a cell in the cells of the shoulder muscles. Following your diagram/model, provide a written explanation for what you diagram/model depicts. Make sure both your model and explanation are clear, concise, and have the appropriate level of detail to clearly demonstrate you understand cellular respiration and the movement of mass and energy in animals.arrow_forward
- Need hhelp Please answer both a.What are the differences in electron acceptor and electron donors used by Escherichia coli (during aerobic cell respiration) and Acidithiobacillus thioparus (a sulfur chemolithotroph with the capacity for aerobic cell respiration)? b.What gives bacterial cell walls their structural integrity and why is that important.arrow_forwardQ6. Organism A grows at high temperature; Organism B grows at low temperature. What could be assumed about Organism A and B? Organism B has more unsaturated fatty acids in its membranes than Organism A. Organism A has proteins whose tertiary structure is held together with bonds of a higher energy than Organism B. Organism A would not grow as quickly at low temperature as Organism B. Organism A would produce more desaturase enzymes than Organism B. A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1,2,3 and 4 are correctarrow_forwardQ35. Which of the following would be dramatically reduced by membrane leakage? A. Proton transport by the plastoquinone pool B. NADP+ synthesis C. ATP synthesis D. Light-dependent oxidation/reduction of P680arrow_forward
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