BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 36, Problem 2U
The water potential of a plant cell is the
a. stun of the membrane potential and gravity.
b. difference between membrane potential and gravity.
c. sum of the pressure potential and solute potential.
d. difference between pressure potential and solute potential.
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The major function of the sodium-potassium pump is toa. pump Na+ into and K+ out of the cell.b. generate the resting membrane potential.c. maintain the concentration gradients of Na+ and K+ across theplasma membrane.d. oppose any tendency of the cell to undergo hyperpolarization.
If 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.
The figure below shows a U-shaped tube with the same level of water (green color) at both sides. What will likely happen if solutes will be added on the left side? Choose the best answer
A. The left region with high solutes will have higher water potential.
B. The left region with high solutes will have lower water potential.
C. The water will move from the region with low solutes and high water potential to the region with high solutes and low water potential.
D. The water on the right region will decrease as it moves to the opposite region.
A, C, and D
B, C, and D
Chapter 36 Solutions
BIOLOGY
Ch. 36.1 - Predict the direction of water movement based on...Ch. 36.1 - Prob. 2LOCh. 36.2 - Prob. 1LOCh. 36.2 - Prob. 2LOCh. 36.3 - Prob. 1LOCh. 36.3 - Prob. 2LOCh. 36.4 - Prob. 1LOCh. 36.4 - Prob. 2LOCh. 36.5 - Prob. 1LOCh. 36.6 - Prob. 1LO
Ch. 36.6 - Prob. 2LOCh. 36 - What would w, s, and p of the cell in figure 36.5a...Ch. 36 - Prob. 2DACh. 36 - Data analysis Comparative analyses of fossil and...Ch. 36 - Prob. 1IQCh. 36 - Which of the following is an active transport...Ch. 36 - The water potential of a plant cell is the a. stun...Ch. 36 - Hydrogen bonding between water molecules results...Ch. 36 - Water movement through cell walls is a....Ch. 36 - Prob. 5UCh. 36 - The formation of an air bubble in the xylem is...Ch. 36 - Prob. 7UCh. 36 - Stomata open when guard cells a. take up...Ch. 36 - Prob. 9UCh. 36 - A plant must expend energy to drive a....Ch. 36 - Which of the following statements is inaccurate?...Ch. 36 - If you could override the control mechanisms that...Ch. 36 - Prob. 3ACh. 36 - If you were able to remove the aquaporins from...Ch. 36 - Prob. 5ACh. 36 - If you fertilize your houseplant too often, you...Ch. 36 - How could you detect a plant with a mutation in a...Ch. 36 - Prob. 3SCh. 36 - Prob. 4SCh. 36 - A carrot is a biennial plant. In the first year of...
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- Study the following table and identify the correct sequence of cell which shows the path of water movement between them : Osmotic potential Pressure potential Cell (MPs) (MPa) A - 0.95 0.40 - B - 0.75 0.40 C - 0.85 0.25 -arrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. Plant cells never shrink with the support of cell wall. b. Low osmolarity means high water content. c. Saltwater fish secrete salt through their gills and have concentrated urine.arrow_forwardSolutes tend to diffuse from a region where they ar_____ concentrated to an adjacent region where they are_______ concentrated. a. more, less c. movement is independent b. less, more of concentrationarrow_forward
- The energy source for movements of Na* and K* during an action potential is a. the Na*/K* ATPase b. the thermal energy in the cell membrane c. the concentration gradients for the ions d. determined by the lipids of the cell membrane e. the negative charge of the extracellular fluid relative to the cytosolarrow_forwardWhich of the following statements is correct? A. A transmembrane integral protein is required for a lipophilic solute to move through the plasma membrane. B. The net movement of water through a cell membrane is dependent on both the osmotic gradient and the presence of transmembrane channel proteins? C. The membrane permeability for an ion is determined in part by the number of open unipart carriers for that ion in the membrane? D. Both A and B are correct & C is incorrect E. A, B, & C are all correct Please explain! Thank you so mucharrow_forwardWhat will happen if a cell with a solute potential of -0.4 MPa and a pressure potential of 0.2 MPa is placed in a chamber filled with pure water that is pressurized with 0.5 MPa? a. Water will flow out of the cell. b. Water will flow into the cell. c. The cell will be crushed. d. The cell will explodearrow_forward
- Which of these statements about ion movement through the plasmamembrane is true?a. Movement of Na+ out of the cell requires energy (ATP).b. When Ca2+binds to proteins in ion channels, the diffusion of Na+into the cell is inhibited.c. Specific ion channels regulate the diffusion of Na+ through theplasma membrane.d. All of these are truearrow_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(2) a. Mineral salt is essential for growth of a plant. The process responsible for absorption of mineral salt is: a. Mass flow b. Diffusion Active transport C. d. Osmosis b. The reason for my answer is because : a. Absorption occurs due to concentration gradient b. Absorption occurs with the help of energy opposing to diffusion C. Movement as a bulk due to pressure changes d. Absorption through permeable membranesarrow_forward
- In the following diagram, if the T.P. of cell A increases to 6, what would be the changes with regard to water movement? O.P. = 12| O.P. = 20 T.P. = 6 T.P. = 14 E O.P. = 15| 0.P. = 8 T.P. = 9 T.P. = 2 D A O.P. = 6 T.P. = 0arrow_forwardWhich of the following describes how osmosis occurs across a cell membrane/ A. Solutes move from an area of high water concentration to an area of low water concentration. B. Water moves from an area of low solute concentration to an area of high solute concentration. C. Both water and solutes move across the cell membrane from an area of high concentration to an area of low concentration. D. Solutes move from an area of low solute concentration to an area of high solute concentration. E. Water moves from an area of high solute concentration to an area of low solute concentration.arrow_forwardWhich of the following best describes a hyperosmotic solution? A. a solution with a higher concentration of solutes as compared to the other side of the membrane B. a solution with a lower concentration of solute as compared to the other side of the membrane C. a solution with equal solute concentration as compared to the other side of the membrane D. none of the abovearrow_forward
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