Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 34, Problem 3TYK
Summary Introduction
Introduction:
The turgor pressure influences the movement of solutes and water throughout the cell and plant body. It contributes to the turgidity of the cell. The osmotic flow of water across influences the turgor pressure in the plant cells and also maintains the structure of the plant cell.
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Which of the following is true of the water potential of a healthy living plant cell? ( SELECT ALL THAT APPLY) A. It has a higher solute potential (lower solute concentration) than the extracellular environment B. It is under negative pressure C. It has a lower solute potential (high solute concentration) than the extracellular enviroment D. It is under positive pressure E. It has a pressure potential equal to zero
Consider a plant cell. The value for solute concentration in a plant cell is -0.12 MPa and the turgor pressure is 0.12 MPa.
1- What is the water potential in this plant cell?
2- If this plant cell were placed in a solution with water potential of -0.1 MPa, what would happen to the cell? (Hint: explain where the water goes and what that does to the cell).
Increasing the concentration of solutes increases osmotic potential, hence water potential decreases.
A. Agree, because presence of solutes increses osmotic pressure and thus osmotic potential.
C. Agree, because they just represent the same values.
D. Disagree, because it is the decrease in water pressure that decreases osmotic potential.
B. Disagree, because presence of solutes increases osmotic pressure which decreases osmotic potential.
Chapter 34 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 34.1 - Prob. 1SBCh. 34.1 - Prob. 2SBCh. 34.1 - Explain how the apoplastic, symplastic, and...Ch. 34.2 - Prob. 1SBCh. 34.2 - Prob. 2SBCh. 34.3 - Prob. 1SBCh. 34.3 - Prob. 2SBCh. 34.3 - Prob. 3SBCh. 34.4 - Prob. 1SBCh. 34.4 - Prob. 2SB
Ch. 34.5 - Compare and contrast translocation and...Ch. 34.5 - Prob. 2SBCh. 34 - Prob. 1TYKCh. 34 - Prob. 2TYKCh. 34 - Prob. 3TYKCh. 34 - Prob. 4TYKCh. 34 - Prob. 5TYKCh. 34 - Prob. 6TYKCh. 34 - Prob. 7TYKCh. 34 - Prob. 8TYKCh. 34 - An indoor gardener leaving for vacation completely...Ch. 34 - Prob. 10TYKCh. 34 - Prob. 11TYKCh. 34 - Prob. 12TYKCh. 34 - Discuss Concepts Concerns about global climate...Ch. 34 - Prob. 14TYKCh. 34 - Apply Evolutionary Thinking A variety of...Ch. 34 - Prob. 1ITDCh. 34 - Prob. 2ITDCh. 34 - Prob. 3ITD
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- The water potential of three adjacent plant cells are as follows: X 0kPa Y -1000kPa Z -4000kPa In which direction will water move?arrow_forwardYou place a flaccid plant cell (Ψ = -0.7 MPa) into an environment (beaker) of sucrose solution (Ψ = -0.9 MPa). Compare the initial conditions of the flaccid cell and the environment (beaker of sucrose solution) in terms of: A) Water potential (high or low) of the environment B) Solute concentration (high or low) of the environment C) Tonicity (hypertonic, hypotonic, or isotonic) of the environment D) Water potential (high or low) of the cell E) Solute concentration (high or low) of the cell F) Tonicity (hypertonic, hypotonic, or isotonic) of the cell G) Predict the direction of water movement (into the cell, out of the cell, or no net movement) H) Predict the change in turgor pressor of the cell (increase turgor pressure or decrease turgor pressure) I) Predict the fate of the cell (plasmolyzed, turgid, or lysed)arrow_forwardTurgor pressure can be measured, in part, by determining the ____________. A. external force of water applied to a bacterial cell's membrane B. external force of water applied to animal cell's membrane C. internal force of water applied to a plant cell's vesicle D. internal force of water applied to a fungal cell's wallarrow_forward
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- In a beaker containing 0% NaCl, you place a cell which contains 0.9% NaCl. NaCl doesn t cross the membrane. What will be the result?" a There will be net movement of water into the cell. b There will be net movement of NaCl into the cell. c There will be net movement of water out of the cell. d There will be net movement of NaCl out of the cell. e The cell will swell.arrow_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_forwardIf you place a flaccid plant cell with ΨS = -0.4 MPa in pure water, which of the following will occur? A. Water will not enter the cell because the flaccid cell has solutes and low water potential. B. Water enters the cell because the flaccid cell has solutes and low water potential. C. Water enters the cell because the flaccid cell has solutes and high water potential. D. Water will not enter the cell because the flaccid cell has solutes and high water potential.arrow_forward
- 1) A plant cell with a pressure potential of 5 bars and an osmotic potential of -9 bars is in equilibrium with a surrounding solution that is open to the air. What is the water potential of the surrounding solution? 2) A plant cell, when initially placed in pure water, has an osmotic potential of -4 bars and a pressure potential of +2 bars. a) Which way will water diffuse? b) When will net diffusion stop? c) When equilibrium is reached, what are the cell's osmotic potential and pressure potential values?arrow_forwardYou place a flaccid plant cell (Ψ = -0.7 MPa) into an environment (beaker) of pure (deionized) water (Ψ = 0 MPa). Compare the initial conditions of the flaccid cell and the environment (beaker of pure water) in terms of: A) Water potential (high or low) of the environment B) Solute concentration (high or low) of the environment C) Tonicity (hypertonic, hypotonic, or isotonic) of the environment D) Water potential (high or low) of the cell E) Solute concentration (high or low) of the cell F) Tonicity (hypertonic, hypotonic, or isotonic) of the cell G) Predict the direction of water movement (into the cell, out of the cell, or no net movement) H) Predict the change in turgor pressor of the cell (increase turgor pressure or decrease turgor pressure) I) Predict the fate of the cell (plasmolyzed, turgid, or lysed)arrow_forwardYou place a flaccid plant cell (Ψ = -0.7 MPa) into an environment (beaker) of pure (deionized) water (Ψ = 0 MPa). Compare the initial conditions of the flaccid cell and the environment (beaker of pure water) in terms of: D) Water potential (high or low) of the cell E) Solute concentration (high or low) of the cell F) Tonicity (hypertonic, hypotonic, or isotonic) of the cellarrow_forward
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