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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Chapter 29.6, Problem 1CC
Summary Introduction
To suggest:
A mechanism, by which activation of proton pumpsby fusicoccinleads to severe wilting.
Introduction:
The plants acquirethe carbon dioxide by the opening of stomata. The carbon dioxide enters the plant cells, but the water is lost during the opening of stomata. The entry of carbon dioxide and loss of water is regulated by guard cells.
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A) The concentration of CO2 is lower inside a plant cell than in the atmosphere (outside the cell). In your own words, describe how the CO2 levels are kept low inside the plant cell and explain why this is necessary. Assume stomata are open.
B) Regarding the situation presented in Part A and assuming that the stomata of the plant leaves are closed, would this favour the induction of photorespiration in a C3 plant? Explain. Make reference to relevant molecule or molecules as needed.
Please clearly label your responses as A and B
Under conditions of very high light intensity, excess absorbed solar energy is dissipated by the action of photoprotective proteins in the thylakoid membrane. Explain why it is advantageous for these proteins to be activated by buildup of the proton gradient across the membrane.
Experiments 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.
Chapter 29 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 29.1 - Why is long-distance transport important for...Ch. 29.1 - Prob. 2CCCh. 29.1 - WHAT IF? Some plants can detect increased levels...Ch. 29.2 - If a plant cell immersed in distilled water has a...Ch. 29.2 - How would a reduction in the number of aquaporin...Ch. 29.2 - WHAT IF? What would happen if you put plant...Ch. 29.3 - Prob. 1CCCh. 29.3 - WHAT IF? If an element increases the growth rate...Ch. 29.3 - Prob. 3CCCh. 29.4 - Prob. 1CC
Ch. 29.4 - Prob. 2CCCh. 29.4 - Prob. 3CCCh. 29.5 - A scientist adds a water-soluble inhibitor of...Ch. 29.5 - WHAT IF? Suppose an Arabidopsis mutant lacking...Ch. 29.5 - Prob. 3CCCh. 29.6 - Prob. 1CCCh. 29.6 - WHAT IF? If you buy cut flowers, why might the...Ch. 29.6 - Prob. 3CCCh. 29.7 - Prob. 1CCCh. 29.7 - Prob. 2CCCh. 29.7 - Prob. 3CCCh. 29 - Which structure or compartment is part of the...Ch. 29 - Prob. 2TYUCh. 29 - Prob. 3TYUCh. 29 - What would enhance water uptake by a plant cell?...Ch. 29 - Prob. 5TYUCh. 29 - Compared with a cell with few aquaporin proteins...Ch. 29 - Two groups of tomatoes were grown in the...Ch. 29 - Prob. 8TYUCh. 29 - Prob. 9TYUCh. 29 - SCIENTIFIC INQUIRY A Minnesota gardener notes that...Ch. 29 - Prob. 11TYUCh. 29 - FOCUS ON INTERACTIONS The soil in which plants...Ch. 29 - Prob. 13TYU
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- Name the process by which intact plant cells lose water in the form of droplets from leaf margins.arrow_forwardIn hot, dry climates, plants have evolved mechanisms to avoid photorespiration. Which of the following is FALSE Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b с d e C3 plants have no mechanism to avoid photorespiration C4 plants reduce photorespiration by separating the light reaction in the mesophyll cells from the light- independent reaction in the bundle-sheath cells CAM plants minimize photorespiration by collecting and storing CO2 at night and keeping their stomata closed during the day C4 plants include corn, sugarcane, and many grasses CAM plants can undergo photophosphorylation in the absence of sunlight Open in Readirarrow_forwardi. Based on Figure 2, identify the structure that regulates the movement of water and minerals towards the xylem in the root ii. Predict what will happen to the transportation of water and minerals through the plasma membrane if the root was poisoned and no cellular respiration occurred. iii. . Nitrate and phosphate are important anions for plants. Explain how the movement of protons (H+) influence the anions uptake across the plasma membrane of the root hair cellsarrow_forward
- Detection 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_forwardIn hot, dry climates, plants have evolved mechanisms to avoid photorespiration. Which of the following is FALSE Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b с d C3 plants have no mechanism to avoid photorespiration C4 plants reduce photorespiration by separating the light reaction in the mesophyll cells from the light- independent reaction in the bundle-sheath cells CAM plants minimize photorespiration by collecting and storing CO2 at night and keeping their stomata closed during the day C4 plants include corn, sugarcane, and many grasses CAM plants can undergo photophosphorylation in the absence of sunlight 7 Open in Readinarrow_forwardNitrate and phosphate are important anions for plants. Explain how the movementof protons (H+) influence the anions uptake across the plasma membrane of theroot hair cellsarrow_forward
- It is the term referring to the characteristic leaf structure of C4 plants that enables them to outperform C3 plants in an environment that has high O2 concentration and/or temperature. Unlike C3 and CAM plants, C4 plants, such as corn and sugarcane, have leaves with vascular bundles that are surrounded by a chloroplast-rich vascular bundle sheath, which is further surrounded by the spongy mesophyll.arrow_forwardChoose correct option and explain. A plant wilts when- a) sunlight is not available and the rate of photosynthesis slows down. b) the mycorrhizae among its roots have "stolen" too much water from the plant. c) it is sad. d) turgor pressure in cells' central vacuoles is high. e) turgor pressure in cells' central vacuoles is lowarrow_forwardWhat effect would there be on C3 and C4 plants for increased oxygen levels? Why? Explain its effect in the mechanism of the pathway.arrow_forward
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