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 39.3, Problem 1CC
If an enzyme in field-grown soybean leaves is most active at noon and least active at midnight is its activity under circadian regulation?
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The herbicide dinoseb, which was removed from the market many years ago, killed plants by uncoupling oxidative phosphorylation. Ironically, plants have embedded in the inner membrane of their mitochondria a protein named the “uncoupling protein” that essentially can carry out the same process caused by dinoseb. The mechanism of uncoupling oxidative phosphorylation involves which of the following scenarios.
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Chapter 39 Solutions
Campbell Biology (10th Edition)
Ch. 39.1 - What are the morphological differences between...Ch. 39.1 - Cycloheximide is a drug that inhibits protein...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - WHAT IF? If a plant has the double mutation err...Ch. 39.2 - Prob. 3CCCh. 39.3 - If an enzyme in field-grown soybean leaves is most...Ch. 39.3 - WHAT IF? If a plant flowers in a controlled...Ch. 39.3 - MAKE CONNECTIONS Plants detect the quality of...Ch. 39.4 - Prob. 1CC
Ch. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.5 - What are some drawbacks of spraying fields with...Ch. 39.5 - Chewing insects mechanically damage plants and...Ch. 39.5 - Many fungal pathogens get food by causing plant...Ch. 39.5 - WHAT IF? Suppose a scientist finds that a...Ch. 39 - What are two common ways by which signal...Ch. 39 - Is there any truth to the old adage, "One bad...Ch. 39 - Why did plant physiologists propose the existence...Ch. 39 - Plants that have acclimated to drought stress are...Ch. 39 - Prob. 39.5CRCh. 39 - Prob. 1TYUCh. 39 - Prob. 2TYUCh. 39 - Prob. 3TYUCh. 39 - How may a plant respond to severe heat stress? (A)...Ch. 39 - Level 2: Application/Analysis 5. The signaling...Ch. 39 - If a long-day plant has a critical night length of...Ch. 39 - Prob. 7TYUCh. 39 - DRAW IT Indicate the response to each condition by...Ch. 39 - Level 3: Synthesis/Evaluation 9. EVOLUTION...Ch. 39 - SCIENTIFIC INQUIRY A plant biologist observed a...Ch. 39 - SCIENCE. TECHNOLOGY, AND SOCIETY Describe how our...Ch. 39 - Prob. 12TYUCh. 39 - Prob. 13TYU
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- A group of students have carried out an experiment to investigate the relationship between the amount of growth hormone BAP in the culture medium and the growth of shoot of jckplant.They have supplemented the medium with BAP but there is another student suggested that hundred percent shooting efficiency will be obtained when the the culture media is suplemented BAP and NAA.From your point of view, state which option will you choose and explain why?arrow_forwardWith respect to cell metabolism, what is “energy coupling”? Give a very simple example.arrow_forwardWhat is the advantage of using ATP as a common energy source?Another way of asking this question is, “Why does ATP provide anadvantage over using a bunch of different food molecules?” For example,instead of just having a Na+/K+-ATPase in a cell, why not have manydifferent ion pumps, each driven by a different food molecule, like aNa+/K+-glucosase (a pump that uses glucose), a Na+/K+-sucrase (a pumpthat uses sucrose), a Na+/K+-fatty acidase (a pump that uses fatty acids),and so on?arrow_forward
- 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?arrow_forwardPlease asnwer the following question: Suppose you specifically want to measure the amount of beta-glucose present in a sample. You have an enzyme that reacts specifically with the beta form of the sugar,and produces a signal that is easy to measure. However, every time you try to measure the amount of beta-glucose, mutarotation occurs and the alpha form of the sugar is converted into beta!! Can you suggest a simple way of overcoming this problem so you could measure only the beta form of the sugar? HINT: Is there a way you can prevent mutarotation?arrow_forwardThe break down of sugar occurs in biological cells. It goes through multiple stages to produce energy that cells use. One series of reactions during this process is call the citrus acid cycle. Discuss how you could either speed up or slow down the degradation of glucose through the citrus acid cycle? (Hint: look at the citrus acid cycle and choose one step)arrow_forward
- The nerve gas sarin acts as a poison by covalently bonding to a hydroxyl group in the active site of the enzyme acetylcholinesterase. This binding results in a higher-than-normal amount of acetylcholine at a nerve synapse, resulting in muscle spasms. From this description, would you expect sarin to be a competitive, noncompetitive, or irreversible inhibitor? noncompetitive inhibitor irreversible inhibitor competitive inhibitorarrow_forward(a)What are the two superfamilies of proteins in which amylase is categorized? (b)To which superfamily of proteins does active site of the amylase belong?arrow_forwardMany types of fruit turn brown when they are cut open and exposed to oxygen in the air. The brown color is the product of an enzyme that combines compounds in the fruit with oxygen from the air. Use your knowledge from our potato lab or simulation to answer the following question. You are having guests for dinner and have prepared a tray of freshly cut fruit for them to eat as a snack before the meal. Your guests call to inform you that they will be about an hour late due to winter weather. What things might you be able use or do to prevent the fruit from turning brown before your guests arrive and still be able to enjoy the fruit? Explain why your plan would work.arrow_forward
- What do the yeasts provide for the fermentation chambers?arrow_forwardTable 9.2 shows that DGo’ for the aldolase reaction is large, and positive, yet the reaction proceeds in the forward direction. Using the metabolite concentrations in table 9.3, calculate the actual DG in the cell for the reaction to show that it is consistent with the value reported in table 9.2. Explain in words the strategy the cell uses to keep glycolysis moving in the forward direction (1-2 sentences).arrow_forwardIn each of two steps during the "Energy payoff stage" of glycolysis, ATP is generated when an enzyme uses one of the phosphate groups attached to one of the ends of a 3-carbon intermediate molecule to phosphorylate (add a phosphate group) ADP, forming ATP. This mechanism of producing ATP from ADP and a phosphate group is known as: Question 9 options: substrate level phosphorylation redox phosphorylation lactic acid fermentation oxidative phosphorylationarrow_forward
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