In this experiment we are studying how molecules in a solution are able to move from an area of senior proud up minginess to an area of low concentration. With this, it testament also hand over us how hypertonic and hypotonic solutions exist, as well as how cells try to get back into an isotonic state. In doing so, this interrogatory ground will allow us to learn why and how dissemination and osmosis happens in all living things. We will be testing the movement of solutes from their area of high concentration to the area of put mastered concentration that surrounds them
Hypothesis - If the concentration of water in 2 given locations is varied, the water will diffuse from the area of high concentration to the area of low concentration.
Design - The experiment was give away up into two mean solar days. The first days activities we examine the relationship between molecular size and movement done a selectively permeable membrane. We completed the experiment by assembling mock-cells come out of dialysis tubing. Each cell contained 15% glucose solution, and 1% starch solution. The cell was placed into a beaker filled with distilled water, and 5 ml of Lugols. We placed potato cylinders into beakers of different sucrose solutions. later(prenominal) sitting over night, we found the mass of the cylinders.
The activities of the second day were designed to help us understand the effects of solute concentration on the rate of osmosis. We created more mock-cells. Each mock-cell had a different concentration of sucrose solution. Each cell was placed into a different beaker, filled with distilled water. We then recorded the mass of the cells after fifty minutes.
In diffusion, molecules will always move down the concentration gradient, toward areas of lesser concentration. Think of food coloring that spreads out in a glass of water, or air freshener sprayed in a room. Osmosis is - the diffusion of water (across a membrane) Water will move in the direction where there is a high concentration of solute (and hence a lower...If you want to get a full essay, order it on our website: Orderessay
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