Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 39.2, Problem 1CC
Describe the direction of water movement when a cell of each of the three types is placed into a solution of pure water (whose water potential, ψw, is defined as 0 MPa).
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Consider the two solutions separated by an ideal semipermeable membrane (permeable to water but impermeable to solute). Assuming complete dissociation of all the salts you can expect:
a.) net water movement from side 1 to side 2
b.) net water movement from side 2 to side 1
c.) no net water movement
What are some other biological examples of solutes affecting water potential and therefore movement of water in a living organism? Find examples in both plant and animal.
Name the phenomenon by which living or dead plant cells absorb water by surface attraction.
Chapter 39 Solutions
Biology
Ch. 39.2 - Describe the direction of water movement when a...Ch. 39.3 - Prob. 1CSCh. 39.4 - Prob. 1CSCh. 39.4 - Prob. 1CCCh. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.4 - Prob. 4CCCh. 39.4 - Prob. 5CCCh. 39.4 - Prob. 1EQCh. 39.4 - Prob. 2EQ
Ch. 39.4 - Prob. 6CCCh. 39.4 - Core Skill: Connections Look back to Figure 36.16,...Ch. 39 - Prob. 1TYCh. 39 - Prob. 2TYCh. 39 - Prob. 3TYCh. 39 - Prob. 4TYCh. 39 - Prob. 5TYCh. 39 - Which of the following statements best explains...Ch. 39 - What features of water explain how it can be drawn...Ch. 39 - Prob. 8TYCh. 39 - Prob. 9TYCh. 39 - Prob. 10TYCh. 39 - Prob. 1CQCh. 39 - Prob. 2CQCh. 39 - Prob. 3CQCh. 39 - Prob. 1COQCh. 39 - Prob. 2COQ
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- Describe why the concentration of water should be nearly the same inside the cell and in the extracellular fluid, at equilibrium.arrow_forwardWhy is it important to use different solutes ( NaCl and glucose environment) when comparing water potential and mass of cells?arrow_forwardin what concentration gradient do water molecules move faster in? would the water molecules move faster when there is a high concentration gradient?arrow_forward
- Assume that a beaker is divided in half by a membrane which is permeable to water only. A 0.45 M glucose solution is on one side of the membrane, and a 0.40 M NaCl solution is on the other side of the membrane. (a) Diagram the above set-up, (b) indicate with an arrow the direction of water movement across the membrane and (c) explain, specifically, why the movement occurs in that directionarrow_forwardWhat is meant by 'free water molecules" in relationship to the movement of water between a hypertonic and hypotonic solution? You can diagram and explain or just explainarrow_forwardWhat general conclusion can you make concerning the movement of water? There is always a net movement of water by osmosis toward (a) an isotonic solution, (b) a hypotonic solution, or (c) a hypertonic solution.arrow_forward
- Assume that a beaker is divided in half by a membrane which is permeable to water only. A 0.45 M glucose solution is on one side of the membrane, and a 0.40 M NaCl solution is on the other side of the membrane. Indicate which direction would water move. Explain why the movement occurs in that direction.arrow_forwardIn the space below, explain why the concentration of water should be nearly the same inside the cell and in the extracellular fluid, at equilibrium.arrow_forwardCan you predict water movement based on the relative osmolarities of two solutions? Why or why not?arrow_forward
- Suppose an animal and a plant cell is placed in a hypotonic , hypertonic and isotonic solution. Using a diagram, show the net direction of motion of the water molecules and the final effect on the cellsarrow_forwardIdentify the movement of water in surrounding medium and intracellular environment, given these hypothetical conditions. a. surrounding medium (7% salt, 93 % water) b. intracellular environment - RBC (25% salt, 75% water) 2. a. surrounding medium (35% salt, 65% water) b. intracellular concentration - RBC ( 2% salt, 98% water)arrow_forwardIf the fluid inside a cell has a 1.5% solute concentration, which of the following solution(s) would be considered HYPOTONIC? SELECT ALL THAT APPY A. A solution with 3.4% calcium phosphate concentration B. A solution with 1.4% glucose concentration C. A solution with 2.5% potassium chloride concentration D. A solution with 0.5% sodium chloride concentration\arrow_forward
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