E) In which direction will water move?
Into the cell, Out of Cell or No net movement?
F) Draw an arrow or arrows on Beaker #3 above to show the movement of water.
G) Explain how you determined the movement of water.
H) Over time, what will happen to cell #3?
Shrinks, Swells or Remains the same size?
PRE-LAB-os AND TONICITY PRACTICE PROBLEMS MoSIS roduction to osmosis and Tonicity practice problems: In this pre-lab exercise, each dialysis bag cell. Like the plasma membrane, the dialysis tubing is selectively presents a (such as Nacior permeable. The solutions are aqueous solutions, which means solute but the in the solvent water. Water can move into or out of the dialysis bag \"model of the \"cell\" solute cannot. the water moves into, moves out of or moves into and out environment equally depends on the environment outside of the \"cell\"; in this model system the is the solution in the beaker surrounding the dialysis bag Carefully read before completing the pre-lab assignment. Your textbook is also the introduction a good reference for this assignment. Part Selectively permeable dialysis bags are used to represent three different cells placed in three different beakers. The cells contain NaCl in different concentrations of aqueous solutions. The cells are placed in beakers, which also contain different aqueous solutions of Naci For each of the beakers, answer the questions below. Beaker 3 Beaker 1 Beaker 2 Cell 1 Cell 2 Cell 3 Cell 1 contains 50% NaCl Cell 1 contains 30% NaCl Cell 1 contains 15% NaCl Beaker contains 25% NaCl Beaker contains 30% NaCl Beaker contains 35% NaCl
Ans. E) Water will move out of the cell.
When a cell is placed in hypertonic solution, water will diffuse out of the cell and it become shrink whereas if the cell is placed in hypotonic solution it will swell.
F) The point of arrow will be towards outside of the bag indicating the outside movement of water from the bag/cell.
G) In the beaker#3, the cell contains 15% NaCl and placed in a beaker containing 35% NaCl (it will create a hypertonic environment because the NaCl concentration is higher in beaker than the cell/bag). Hence in this situation water will diffuse out from the cell and also the cell can dehydrate and shrink and cellular metabolism can stop
H) Over time as the cell dehydrate and shrink, it eventually causes halt of cellular metabolism.
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