Investigate the Water Potential of Potato Cells Essay -- GCSE Biology

Investigate the Water Potential of Potato CellsIntroductionIn my investigation, I hope to determine the urine system voltage of potatocells. The prepare material I testament use in my investigation will bepotato chips, which I will cut myself prior to the investigation.I hope to find the concentration of a solution where the chip waistcloththe same(p) mass and length, which will tell me that the water supply potency at heart the cells is the same as the water potential outside the cells.BackgroundOsmosis is delimit as the movement of water through a semi- leaky membrane. Semi - permeable membranes are permeable to water butimpermeable to certain turn substances. In the case of thisexperiment, the sucrose molecules cannot diffuse through the cellmembrane because the sucrose molecules are much bigger than watermolecules.The water potential of a solution is a measure how dilute the solutionis, and because of how readily water will diffuse from thissolution, through a semi-pe rmeable membrane, into other solution.Pure distilled water has a water potential of zero the waterpotential becomes to a greater extent negative as more substances are dissolve init. When two solutions are separated by a semi-permeable membrane,water moves from the side with high water potential to the side withlow water potentialIf we dissolve substances in water we lower the water potential of thesolution-High water potential Some water potential Low Water PotentialChip grows Chip stays the same Chip shrinksKey Variableso Mass of the chip - I come back that the larger the mass of the chip then the bigger the difference in results will be, therefore I think that to make experiment more easy it would be best to u... ...ivebalance to measure the mass, and I could eat up used a burette orpipette for volumes of liquids. I overly could hold up used a sharper knifeto cut the lengths of the chips. completely of these things would have mademy experiment more accurate. I also could have done a few moreaverages and repeats, to decrease the margin of fallacy in myexperiment, making my results more reliable.For further work, I would like to get together if in my experiment I couldactually get the result in my experiment where chip does not change atall, by putting it in the correct Molarity of sucrose solution. Iwould do this by putting it in different concentrations, ranging from0.1M to 0.4M, and check what happened. I would also like to do theoriginal experiment again, but using the improvements I listed above,and see how much of a difference there was in the results with theimprovements.