Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 7, Problem 9TYU
SCIENCE, TECHNOLOGY, AND SOCIETY Extensive irrigation in arid regions causes salts to accumulate in the soil. (When water evaporates, salts that were dissolved in the water are left behind in the soil.) Based on what you learned about water balance in plant cells, explain why increased soil salinity (saltiness) might be harmful to crops.
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1. Channel proteins used for the bulk passage of water molecules across the cell membrane?2. The tonicity of the extracellular fluid that maintains the turgid appearance of plant cells?3. The tonicity of the extracellular environment causing plasmolysis of plant cells?4. Plant cells are said to be flaccid in this type of cellular environment or solution?
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1. A) If the potato cells were hypotonic to the surrounding solution, the surrounding solution itself
would be what to the potato cells (hypertonic, hypotonic, or isotonic)?
B) Were the potato cells submerged in water with no salt hypertonic, hypotonic, or isotonic to the
surrounding environment?
C) Were the potato cells submerged in 5 g/100mL salt solution hypertonic, hypotonic, or isotonic to
the surrounding environment?
D) Look at your graph. At approximately what concentration of salt solution would the potato cells
have likely been isotonic with the surrounding solution? [Tip: Estimate approximately at what
concentration there would have been no change in the average length of potato strips.]
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A plant cell has a 5% percent salt concentration. It is placed into a solution
containing a 12% percent salt concentration. What will happen to the plant
cell?*
Water will move out of the plant cell, causing it to shrivel.
Water will move into the plant cell, causing it to swell and burst.
Water will move into the plant cell, causing it to shrivel.
Water will move out of the plant cell, causing it to swell and burst.
Chapter 7 Solutions
Campbell Biology
Ch. 7.1 - VISUAL SKILLS Carbohydrates are attached to...Ch. 7.1 - Prob. 2CCCh. 7.2 - What property allows O2 and CO2 to cross a lipid...Ch. 7.2 - VISUAL SKILLS Examine Figure 7.2. Why is a...Ch. 7.2 - MAKE CONNECTIONS Aquaporins exclude passage of...Ch. 7.3 - Prob. 1CCCh. 7.3 - WHAT IF? If a Paramecium swims from a hypotonic...Ch. 7.4 - Prob. 1CCCh. 7.4 - Prob. 2CCCh. 7.4 - MAKE CONNECTIONS Review the characteristics of...
Ch. 7.5 - As a cell grows, its plasma membrane expands. Does...Ch. 7.5 - DRAW IT Return to Figure 7.9, and circle a patch...Ch. 7.5 - Prob. 3CCCh. 7 - In what ways are membranes crucial to life?Ch. 7 - How do aquaporins affect the permeability of a...Ch. 7 - What happens to a cell placed in a hypertonic...Ch. 7 - ATP is not directly involved in the functioning of...Ch. 7 - Which type of endocytosis involves the binding of...Ch. 7 - In what way do the membranes of a eukaryotic Cell...Ch. 7 - According to the fluid mosaic model of membrane...Ch. 7 - Which of the following factors would tend to...Ch. 7 - Which of the following processes includes all the...Ch. 7 - Prob. 5TYUCh. 7 - DRAW IT An artificial "cell" consisting of an...Ch. 7 - EVOLUTION CONNECTION Paramecium and other...Ch. 7 - Prob. 8TYUCh. 7 - SCIENCE, TECHNOLOGY, AND SOCIETY Extensive...Ch. 7 - WRITE ABOUT A THEME: INTERACTIONS A human...Ch. 7 - SYNTHESIZE YOUR KNOWLEDGE In the supermarket,...
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- The following diagram shows the effect of osmotic concentration on a plant cell. Using the terms isotonic, hypertonic and hypotonic identify what is happening in each cell and state what each term means and which cell it applies to. Plant cells cell wall -nucleus cell membrane -central vacuole -chloroplast Paragraph B I U v A !!! liliarrow_forwardMany fruits can be preserved by candying. The fruit isimmersed in a highly concentrated sugar solution, and thenthe sugar is allowed to crystallize. How does the sugarpreserve the fruit? (Osmosis is a very common phenomenon with fruits)arrow_forwardIn the process of exocytosis, vesicles coming from the inside of the cell fuse with the plasma membrane which travels across the membrane to be released outside the cell. This type of transport usually applies to enzymes and hormones. Can you cite an Texample in plants where this form of transport is beneficial? How about in animals?arrow_forward
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- "In a beaker containing 6% NaCl, you place a cell which contains 0.9% NaCl. NaCl doesn t cross the membrane. What will be the result?" There will be net movement of water out of the cell There will be net movement of water into the cell There will be net movement of salt out of the cell There will be net movement of salt into the cellarrow_forwardA plant cell placed into a hypotonic environment will: Lyse Will “puff up” and swell but not lyse Go through plasmolysis Remain at the same osmotic pressurearrow_forwardChoose the correct route of water transfer through the cell wall of root hair , cell membrane of cortex cell and epidermis cell Root hair Epidermis cells Cortex cells a imbibition osmosis osmosis b osmosis diffusion osmosis c active transport osmosis diffusion d permeability active transport diffusion (A) (B) (C) (D)arrow_forward
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