Principles of Biology
Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 5.3, Problem 2TYK
Summary Introduction

Introduction:

When the water is moved from a region of high concentration to a region of low concentration through a semipermeable membrane,then that process is known as osmosis.The process is important as it helps to absorb and excrete ions and other materials inside or out of the cells.

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During osmosis through a selectively permeable membrane, a. water moves down its concentration gradient b. water moves to an area of higher solute concentration c. solutes move against their concentration gradient d. both a and b are correct e. both a and c are correct f. all of the above are correct
Osmosis is water movement across a semipermeable membrane. Which of the following is true about water movement across cell membranes? A. In a hypotonic solution, cells will swell. B. In an isotonic solution, cells will shrink. C. In a hypertonic solution, cells will stay the same. D. Cells can neither shrink nor swell because water cannot penetrate the plasma membrane.
When a cell is placed in a hypertonic solution,a. solute exits the cell to equalize the concentration on both sides ofthe membrane.b. water exits the cell toward the area of lower solute concentration.c. water exits the cell toward the area of higher soluteconcentration.d. there is no net movement of water or solute.
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