Thursday, February 7, 2019
Investigate the Water Potential of Potato Cells Essay -- GCSE Biology
Investigate the Water Potential of Potato Cells displayIn my investigation, I hope to determine the body of weewee potency of tater mobile phones. The plant material I will use in my investigation will bepotato chip shots, which I will cut off myself antecedent to the investigation.I hope to find the concentration of a resoluteness where the chip cincturethe same mass and length, which will tell me that the irrigate potentialinside the cells is the same as the water potential outside the cells. compassOsmosis is defined as the movement of water through a semi-permeablemembrane. rig - permeable membranes argon permeable to water butimpermeable to sure dissolved substances. In the case of this test, 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 another solution.Pure distilled water has a water potential of adjust 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 with get-go 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 release in terminuss 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 have used a burette orpipette for volumes of liquids. I similarly could have used a sharper knifeto cut the lengths of the chips. All of these things would have mademy experiment more accurate. I alike could have done a few moreaverages and repeats, to decrease the permissiveness of error in myexperiment, making my results more reliable.For further work, I would ilk to see 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 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.
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