Tuesday, February 12, 2019
Investigate the Effect of Varying Solution Concentration on Osmosis in
check the Effect of Varying Solution Concentration on Osmosis in a Potato ChipPredictionA definition of osmosis is the movement of peeing molecules from an area of soaring irrigate soaking up to a pitiable piddle system tautness across asemi- porous tissue layer (Oxforddictionary 2000).In a high concentration of water the amount of solute (e.g. sugar) islow. These solutions are usu aloney cognise as a dilute or weak solution.But in a low concentration of water the amount of solute (e.g. sugar)is high. These solutions are usually known as concentrated or strongsolutions.When a weak solution and a strong solution are separated by apartially permeable membrane, the water result move from the area ofhigh concentration to the area of low until both sides are equal. Thisis osmosis, and is shown in the diagram below.Examples of osmosis faeces also be seen in living cells. Root hairs onplants motor in water from the soil via osmosis. Water continuouslymoves along the cells of the bag and up the xylem to the leaf. Wateris moving to areas of lower water concentration all the time. This isshown in the diagram below.Example of Osmosis in a Root blur CellWhen a cell is placed in distilled water which is high waterconcentration water impart move across the semi- permeable membrane intothe cell which has lower water concentration by osmosis, reservation thecell swell in size. The cell is now known as turgid. If a white potato vine cellwas placed in the same mess the cells would increase inlength, volume and mass because of the osmotic effects. If the samepotato cells were placed in a solution with a low water concentration,then the effects would be the opposite - water would move pop out(p) of thecell into the area of lower concentration, the water. Thus, the potatochip will precipitate in length, volume and mass. In more extreme cases,the cell membrane would break away from the cell wall and the cell isthen known as plasmolysed.The high the concentratio n of water in the external solution, thehigher the amount of water that enters the cell by osmosis. Thesmaller the concentration of water in the external solution, thehigher the amount of water that leaves the cell. However, there willbe a point where the concentrations of water inside and outside thecells are equal. This is known as the isotonic point, and at thispoint there will be no change in the length, vo... ...nger, this would have enabled me to set the intensity level point (when the potato can no longer take in all morewater) and dehydration point (when the potato cannot lose any morewater)and therefore get a more accurate result.Finally, I could extend the experiment to a more exact level bylooking at the potato cylinders under a microscope, and then I wouldbe able to see the cells in greater detail and link some moreobservational results.Further investigations that I could convey out in the future are, usinga antithetical variety of potato, for example, a king Edwar d ratherthan a maris piper. Also I could use a different plant tissue, forexample, a carrot or an apple. Then I could find out whether osmosisoccurs with the same patterns and trends with any vegetable.ConclusionHowever despite this, I think that the experiment I carried out,(given the apparatus I was given to carry out the test) wassuccessful, my results were consistent, and I was pleased with thecomparison of my results with my previous prediction. I followed the system plan correctly I believe I gained accurate and enoughenough results to conclude the experiment, and to prove my initialprediction.
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