Investigate the factors affecting the rate of Osmosis :: GCSE Biology Osmosis Coursework

Investigate the factors affecting the rate of OsmosisPlanningOsmosis is the diffusion of piddle from a lower compactness of soluteto a high ingress of solute, done a partially perviousmembrane. In a high concentration of peeing the amount of solute (e.g.sucrose) is low. This could be called a weak or issue stem. In alow concentration of water the amount of solute is high. This could becalled a strong or concentrated solution. When a partially permeablemembrane divides two such solutions, the water go forth move from the bowlof high concentration to the bea of low concentration until bothsides are equal. In plant booths water flows through the cell wall andcell surface membrane into the vacuole from the outside. As a result,the cell swells up. It doesnt burst as the cell wall stops the cellexpanding too much at this point we say a cell is fully turgid.AimThe objective of my investigation is to investigate the factorsaffecting the rate of Osmosis. The key factors I hast en found affectthis areLength - of membraneTemperature - of water stringency - of solutionThe factor I am going to investigate is the concentration of thesolution in which the murphyes are placed. By doing this I will abideto control all other factors to ensure a fair test, these are doingall the tests at room temperature to control the temperature as ahigher temperature would mean diffusion would occur quicker. The massand surface area of the potatoes at the beginning of the investigateare other controls I will strike to monitor to ensure a fair test. Themass of the potato is a dependent variable this means that it will bemeasured passim the experiment. I will measure the mass in gramscorrect to 2d.p. The potato minute will be measured before it is put inthe solution, and after. This will allow us to see whether osmosis hastaken place, and to what extent.The volume of the solution that the potato chips are kept in mustiness befair. The must be totally covered in the s olution, and the amount ofsolution will be kept the equivalent because all the potato chips are thesame size. The amount of solution I cover each chip in will be 20cm.PredictionI predict in my experiment that the higher the concentration of sugarin the solution, the smaller the potato chip will become. I predictthis as the greater the concentration of water in the externalsolution, the greater the amount of water that enters the cell by