Answered: Explain the role of osmosis and that of…

Explain the role of osmosis and that of osmotic pressure in controlling the movement of water across the cell membrane. Compare hypotonic, isotonic, and hypertonic solutions.

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter3: Cells And How They Work

Section: Chapter Questions

Problem 3RQ: Distinguish between the following pairs of terms: a. diffusion; osmosis b. passive transport; active...

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Explain the role of osmosis and that of osmotic pressure in controlling the movement of water across the cell membrane. Compare hypotonic, isotonic, and hypertonic solutions.

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The movement of water is called osmosis. Osmosis is the diffusion of water, and it too moves to reach equilibrium. The relationship between solute concentration and water are opposite. An area with high concentration of solute has less water "concentration", and an area of low solute concentration has a higher water "concentration". Select the options that describe the movement of water if there is a gradient across a membrane. Hint: There are two correct answers. One with the solute perspective and one with a water perspective. Select all that apply: Water moves from an area of high solute concentration to an area of low solute concentration. Water moves from an area of low solute concentration to an area of high solute concentration. Water moves from an area of high water "concentration" to an area of low water "concentration". Water moves from an area of low water "concentration" to an area of high water "concentration".