Diffusion and Osmosis

Objective Diffusion is the process that occurs when a certain strong chroma of material moves to a less concentrated state. Osmosis is the motility of a solvent (as body of wet) through a semipermeable tissue layer (as of a living cell) into a answer of higher solute intentness that tends to equalise the tautnesss of solute on the two sides of the membrane. Terms for water f meek be hypertonic (has low water concentration and high salt concentration than cells), Hypotonic (solution that has high water concentration and low salt concentration than cells), and isotonic (solution that has the very(prenominal) water and salt concentration as the cells). In this lab, we examined the water flow across the selectively permeable membrane of shoot down cells. We measured the earnings movement of the white tater membrane by comparing the tilt of a potato engine block before and aft(prenominal) pensiveness in 7%, 14%, 21%, 28%, and distilled water. system: Altern ative: The potato cells regulate undergo some bod of water movement after the solution. Null: The potato cells give not have got a net movement, and osmosis does not have an effect on the cube. Materials and Methods: The materials utilize in this lab were fin small beakers, distilled water, 7%, 14%, 21%, 28% of NaCl solutions, potato cubes, and paper.

First, live up to hotshot of the beakers or so one-third full with distilled water, and fill the others will all four solutions. There should be generous to describe the potato cubes. Mark the beakers so that you can discern the solution it contains. Pe el potato and cut two cubes about 1cm by 1cm! by 1cm. Then, gently roll to distributively one potato piece on a paper towel to pull up the surface water. Using a equilibrium boat, record its weight, and promptly immerse the piece in one of the experimental solutions. novelize this procedure with the other potato piece, making sure that the counterpoise boat is wiped dry between each weighing. Remove each of the potatoes after 45-60 minutes, dry and then weigh and record initial and final weight....If you want to get a full essay, tack it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper