Osmosis Red Blood cells are isotonic with a Nacl solution that is 0.90% (m/V) Nad also known as Normal Saline(NS), and 5% glucose, also known as DSW (dextrose, 5% in water). Dextrose is the same as glucose. Intravenous fluids must be isotonic to avoid cell lysis (by bursting) or the opposite effect, shriveling or crenation. 6. A cell that is isotonic with DSW is placed in a 10%(m/v) glucose solution. a) Where is the higher concentrated solution (inside the cell or outside the cell)? b) In which solution is the amount of water relative to the solute higher (inside the cell or outside the cell)? c) Which direction will water flow to equalize the concentrations (into the cell or out of the cell)? d) Will the cell swell or crenate? (renate

Osmosis Red Blood cells are isotonic with a Nacl solution that is 0.90% (m/V) Nad also known as Normal Saline(NS), and 5% glucose, also known as DSW (dextrose, 5% in water). Dextrose is the same as glucose. Intravenous fluids must be isotonic to avoid cell lysis (by bursting) or the opposite effect, shriveling or crenation. 6. A cell that is isotonic with DSW is placed in a 10%(m/v) glucose solution. a) Where is the higher concentrated solution (inside the cell or outside the cell)? b) In which solution is the amount of water relative to the solute higher (inside the cell or outside the cell)? c) Which direction will water flow to equalize the concentrations (into the cell or out of the cell)? d) Will the cell swell or crenate? (renate

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 2SQE: One of the important uses of the Nernst equation is in describing the flow of ions across plasma...

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Both of the regular intravenous solutions administeredin medicine, normal saline and lactated Ringer’ssolution, are isotonic. Why is this important?
If you made a hematocrit in two tubes. Tube A is made of 0.60M NaCl, and Tube B is made of 1.00M of NaCl, describe how the cell would respond in these solutions? Which would have a higher rate of osmosis? If the cell is permeable to NaCl, which would have a higher rate of diffusion?
For most neurons, the extracellular concentration of chloride ions (Cl-) is 108 mM, whilethe intracellular concentration of Cl- is 5 mM.If the plasma membrane becomes more permeable to Cl-, would there be Clinflux or Cl- efflux at an RMP of -70 mV? Why?
A red blood cell will swell and undergo hemolysis when placed in a hypotonic solution. Why this happens considering the principles of osmosis?
The osmolarity of plasma is maintained at about 300 mOsM. What would the osmolarity inside a red blood cell need to be to maintain osmotic equilibrium between the intracellular fluid and plasma? Give one specific reason why it is important to maintain plasma omolarity within a narrow range of values.
Calculate the effective quantity (g) of sodium chloride related to tonicity in 100 mL of an intravenous fluid labeled "5% dextrose in 0.45% sodium chloride," and indicate whether the solution is isotonic, hypotonic, or hypertonic.
What type of intravenous solution (isotonic/hypertonic/hypotonic) must be administered to a patient suffering from polydipsia (excessive thirst) after a head injury?
Left Compartment Right Compartment 7 grams of Z per liter solution 4 grams of XY per liter of solution total volume = 1 liter. total volume = 1 liter Solute Z has a molecular weight of 20 (non-dissociable) Solute XY has a molecular weight of 10 (dissociates into X+ and Y-) 1. If the membrane is impermeable to all solutes, and there are 7 g/l of solute in the left compartment, what concentration of XY (g/l) in right compartment would make the solutions isotonic?
The classic demonstration that cell plasma membranes are composed ofbilayers depends on the following kinds of data:• The membrane lipids from 4.74 x 109 erythrocytes will form a monolayerof area 0.89 m2 when spread on a water surface.• The surface of one erythrocyte is approximately 100 μm2 in area.Show that these data can be accounted for only if the erythrocyte membraneis a bilayer.
Ion transporters are “linked” together—not physi-cally, but as a consequence of their actions. For example,cells can raise their intracellular pH, when it becomes tooacidic, by exchanging external Na+ for internal H+, usinga Na+–H+ antiporter. The change in internal Na+ is thenredressed using the Na+-K+ pump.A. Can these two transporters, operating together,normalize both the H+ and the Na+ concentrations insidethe cell?B. Does the linked action of these two pumps causeimbalances in either the K+ concentration or the mem-brane potential? Why or why not?
A concentration gradient for water must be present in cells for osmosis to occur. Which bag represented the steepest concentration gradient relative to its surrounding environment?
Information: Osmotic pressure is the pressure that a solvent exerts against a semipermeable membrane, such as a cell membrane. The higher the solute concentration, the lower the osmotic pressure. Red blood cells have an osmotic pressure equal to that of a 0.90% (m/v) solution of sodium chloride and 5.0% (m/v) solution of dextrose. A solution that has a higher concentration that this is called hypertonic; one with a lower concentration is called hypotonic. Osmotic pressure is an important factor affecting cells. Osmoregulation is the homeostasis mechanism of an organism to reach balance in osmotic pressure.Hypertonicity is the presence of a solution that causes cells to shrink.Hypotonicity is the presence of a solution that causes cells to swell.Isotonicity is the presence of a solution that produces no change in cell volume.When a biological cell is in a hypotonic environment, the cell interior accumulates water, water flows across the cell membrane into the cell, causing it to…