Effect of Concentration on Osmosis Essay -- GCSE Biology Osmosis Cours

Effect of Concentration on OsmosisAimTo find out how the absorption of sucrose solution affects the massof the white stump spud chip shot unexpended in the solution for one day.PredictionI predict that when the sucrose ducking is low the potato chip leave behind gain mass. This is because in that respect pass on be a higher sucroseconcentration in the potato chip so weewee supply get out go into the potato fromthe solution. I predict that when there is a high concentration ofsucrose the potato will lose mass. This is because there is a higherconcentration of sucrose solution in the solution comp atomic number 18d to that inthe potato chip so water from the potato will go into the solution toeven it out.Osmosis is the feat of a solvent by a selectively perme satisfactory membrane (as of a living cell) into a solution of higher soluteconcentration that tends to equal the concentrations of solute onthe two sides of the membraneOsmosis is the movement of water from high wa ter concentration tolower water concentration through a selectively permeable membrane.Selectively permeable membranesare very thin layers of material (cellmembranes are selectively-permeable), which allow some molecules topass through them but prevent other(a) molecules from passing through.Cell membranes will allow small molecules like Oxygen, water, snowDioxide, Ammonia, Glucose, amino-acids, etc. to pass through. Cellmembranes will not allow larger molecules like saccharose, Starch,protein, etc. to pass through.In my try I will have a try tubing with a potato chip in. Theoutside wall of the potato chip is selectively permeable so it letswater pass through it but not bigger molecules such(prenominal) as sucrose. In thetest tubes I will put divers(prenominal) concentrations of sucrose solution.When the concentration of the solution is lower than that in thepotato, water will pass through the selectively permeable wall into thepotato.Potato cellsSucrose solutionThe mass of the potato chip increasesSucrose molecule urine moleculeWhen the sucrose solution is stronger outside if the potato chip waterwill move out from the potato chip into the solution.When the concentration is the homogeneous on both sides of the selectivelypermeable wall nothing passes through it and the mass will stay thesame.PlanApparatusFive test tubesLabelsRulerScalesTissue... ...hips in each test tube. This would make it more than immaculate as when Ihad two in a test tube if one of them was a long way out it made the interpret not follow the line well when I plotted the averages. there was one anomalous result at 0.5 mol. I count on this was because wepatted them juiceless when we got them out of the test tubes as we did notwant to weigh there water on the outside of the potato but I thinkthat we may not have dried them all equally so this anomalous resultmay have been due to it having water left on the outside of it.Also the potato itself was not from the same check of the potato andwas not exactly the same size, although I did try to cut them to 36mmeach.I could also try the same experiment but with different volumes ofcell tissues and see if the percentage change differed with a biggerand little surface area.I could now investigate the smaller range conterminous to 0.25 to see thesucrose concentration equivalent to the potato.Finally, I could extend the experiment to a more exact level bylooking at the potato cylinders under a microscope, then I would beable to see the cells in greater detail and draw some moreobservational results.