Please order the following types of solute diffusivity from largest to smallest. 1. D pore: Diffusivity of solute in a pore 2.De: Effective diffusivity of solute through a heterogeneous membrane material 3. D AB: Diffusivity of solute in water 4. D mi Diffusivity of solute through a membrane pore relative to the bulk concentration

Please order the following types of solute diffusivity from largest to smallest. 1. D pore: Diffusivity of solute in a pore 2.De: Effective diffusivity of solute through a heterogeneous membrane material 3. D AB: Diffusivity of solute in water 4. D mi Diffusivity of solute through a membrane pore relative to the bulk concentration

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 6RE

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Choose the best answer 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.
The movement of water through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concnetration is called _________ osmosis diffusion solubility gradient
given the perfect osmometer (plasma membrane bounded by perfectly rigid walls) inside the cell, the solute potential is 0 and the pressure potential is 0, outside the cell the water potential is also 0 you add a dilute salt solution that changes the osmotic potential of the solution to 0.3MPa 1. what is the approximate value of the solute potential and pressure potential inside the cell after the system has come to equilibrium? 2. why does the movement of relatively few water molecules across the plasma membrane of the osmometer have such a large effect in the value of pressure potential?
Which of the following presents the correct sequence of steps involved in the short-distance transport of solutes across plasma membrane? A. A-D-B-C B. D-B-A-C C. B-A-C-D D. A-B-C-D
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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
Which of the following is the most accurate definition of concentration gradient? A. Difference in the number of molecules that cross a cell membrane B. Different types of solute molecules found inside and outside a cell C. Different in the amount of a molecule inside and outside a cell D. Difference in the number of molecules on one side of a cell membrane
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A red blood cell has an internal salt concentration of ∼150 mM. The cell is placed in a beaker of 500 mM salt. Solve, (a) Assuming the cell membrane is permeable to water but not to ions, describe what will happen to the cell in terms of osmosis. (b) If the membrane were permeable to ions, in which direction would solutes diff use: into or out of the cell?
In an investigation of osmosis, apple cores were submerged in different molarity solutions to determine the unknown osmolarity of the apple. To determine the molarity five uniform apple cores were massed before submerging them in different molarity solutions. After 24 hours the apple cores were massed again. Then the percent change in mass was determined for the five uniform apple cores in each molarity solution. (b) Identify the osmolarity of the apple.
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