An Investigation into the Factors which Affect Osmosis Essay -- GCSE B

An Investigation into the Factors which Affect OsmosisOsmosis is defined as the movement of body of peeing molecules from a higher(prenominal) preoccupancy to a level concentration through a partially permablemembrane. Osmosis occurs with molecule moving in and out, thesemolecules move across the coiffures mobile phone membrane. The congeals jail cellmembrane is partially permable and in that locationfore it has small holes in itwhich allow for small piddle molecules to deteriorate through it howeverlarger molecules such as glucose through. However on the out side of the plant life cells there is a cell palisade ofcellu lapse that has larger holes that let anything sneak off through it.This cell wall is wholly permeable and therefore impart allow largermolecules such as glucose through it, but the larger molecules canstill not pass the cell membrane. When these cells are in a antecedentwhich has a higher concentration of water than the cells concentrationof water th e water will voiced into the cell as the water moves froma higher concentration (the solution) to the lower concentration (thecells.) As much and more water enters the cell the cell wall starts toexpand and the cell starts to become turgid.Even is a plant cell is placed in a solution where there is a highwater concentration and a weak abrasion solution (say a 0.1 d/mol3 strong)there will still be more water outside the cell than inside the celltherefore there will still be an increase in volume and weight. This path that when the plant cells are placed in a strong sugar solution(where there is more sugar than water.) there will be a decrease inweight and volume. This process is defined as plasmolysis. This iswhere the cell membrane pulls away from the cell wall, this is becausea lot of water has been moved from the cell as the plant cell has thestrong concentration of water and the solution has a weakconcentration the water will move from the plant top the water.Sometimes the cel l will cringe up completely and it becomes flaccid.This is represented in the diagram belowWith osmosis occurring there will eventually be a point where theconcentration of water will be equal to the concentration inside thecell. This means that with the water still diffusing in and out therewill be equal amounts going in and out. This means that osmosis isstill occurring but the plant or the solution is either gaining o... ...ainst the cellwall, the tugor pressure will clear up its maximum and the cells willnot be able to undertake in any more water. At the other end of the eminence, Iwould expect the line to eventually curve off horizontally. Once thecell becomes flaccid and the cell membrane collapses, no more waterwould be able to escape.I did predict that the stronger the solution the more the potato chipswould lose weight. I believe my results have proven this.EvaluationI am pleased with the way my experiment has gone, I did not comeacross too many problems and most of my points on the graph were closeto the line of best fit. Therefore I am happy with the accuracy of myresults.I think my method was adequate for producing accurate results I couldstill mitigate it. I couldve also tried to measure the potato chipsmore accurately when cutting them.I feel my investigation on the whole was a sucsess. I achievedreliable and accurate results. however I could increase my authorizationin my conclusions by repeating the experiment with another carrot to moxie it up. But on the whole my experiment matched my prediction and Iam happy about my results and the way I conducted it.