Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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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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Excess electrons oxidize lipids in the mitochondrial membranes, thus destroying the electron transport chain
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Excessive oxygen is consumed via reduction to water, thus depriving the mitochondria of the ability to carry out phosphorylation that requires oxygen
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The membrane selectivity required to maintain a proton gradient is altered so the potential for driving ATP synthesis via chemiosmosis is degraded
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Uncoupling oxidative phosphorylation kicks a cell into a fermentative pathway that cannot supply sufficient ATP
Chapter 39 Solutions
Campbell Biology
Ch. 39.1 - Prob. 1CCCh. 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 - MAKE CONNECTIONS What type of feedback process is...Ch. 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 - Prob. 3CCCh. 39.4 - Prob. 1CC
Ch. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.5 - Prob. 1CCCh. 39.5 - Chewing insects mechanically damage plants and...Ch. 39.5 - Many fungal pathogens get food by causing plant...Ch. 39.5 - Prob. 4CCCh. 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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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_forwardList 3 environmental factors discussed in lectures and give examples of physiological and biochemical perturbations in plants caused by fluctuations in these environmental factors. For each of the 3 environmental factors describe the primary effects and the secondary effects.arrow_forwardWhat is the specific energy currency of the cell produced in the TCA cycle via substrate-level phosphorylation?arrow_forward
- What is the role of phosphorus in cell metabolism and function at whole plant level?arrow_forwardExperiments to address the day-night discrepancy in warming (see Pic5) indicate that climate change has inhibited plant growth in warm dry areas more than in cool wet areas. Explain this observation.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
- Aside from Avocado seeds, what are the other excellent materials for production of Granular Activated Carbons (GAC)?arrow_forwardDiscuss the D1 protein's importants in plants. (Provide the reference)arrow_forwardDetection of external signals by plant cells often results in a transient rise in the concentration of Ca2+ ions in the cytoplasm. What transport processes can cause such an increase in cytoplasmic Ca2+, and what transport processes can remove the excess Ca2+ and restore the level of Ca2+ to its resting state?arrow_forward
- ENUMERATE the protein amino acid produced by plants from the following precursors. Ribulose-1,5-bisphosphate/ Calvin cycle Pyruvate a-ketoglutarate Oxaloacetate Phosphoribosylpyrophosphate Shikimic acid pathwayarrow_forwardFlippase and scramblase play important roles in the movement of lipid molecules across a membrane bilayer. Match each characteristic with its associated phospholipid translocator. Flippase Scramblasearrow_forwardWhat is ABA ?Give it effects on plants ?arrow_forward
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