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

Investigate the pissing Potential of Potato CellsIntroductionIn my investigation, I hope to determine the wet say-so of potatocells. The plant literal I will use in my investigation will bepotato bits, which I will cut myself prior to the investigation.I hope to palpate the concentration of a solution where the chip staysthe same mass and length, which will tell me that the urine potentialinside the cells is the same as the water potential outside the cells.BackgroundOsmosis is defined as the movement of water through a semi-permeablemembrane. Semi - permeable membranes are permeable to water unlessimpermeable 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 therefore of how readily water will diffuse from thissolution, through a semi-permeable membrane, into ano ther solution.Pure distilled water has a water potential of zero the waterpotential becomes more negative as more substances are dissolved 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 think 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... ...ive symmetry to measure the mass, and I could have used a burette orpipette for volumes of liquids. I also could have used a sharper stabto cut the lengths of the chips. All of these things would have mademy experiment more accurate. I also could have done a few moreaverages and repeats, to decrease the allowance of error in myexperiment, making my results more reliable.For further work, I would like to see if in my experiment I couldactually get the result in my experiment where chip does not change atall, by move it in the correct Molarity of sucrose solution. Iwould do this by putting it in different concentrations, ranging from0.1M to 0.4M, and see 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.