Find out the concentration of the cell contents of a potato :: GCSE Biology A2 A-Level Coursework

Find out the concentration of the cell contents of a murphyIntroductionOsmosis is the diffusion of water from a lower concentration of soluteto a higher concentration of solute through a partially permeablemembrane. This lets littler molecules such as water, pass through butdoes not free bigger molecules through. The molecules continue todiffuse until they reach a balanced state, where no area has a higheror lower concentration than whatsoever other.In a high concentration of water the amount of lucre dissolving agent is low.This is called a imperfect/dilute solution. In a weak concentration ofwater the amount of sugar solution is high. This is called a potent/concentrated solution.When a semi-permeable membrane divides two solutions, the water pass on kick the bucket from the area of high concentration to the area of lowconcentration, until both sides are equal.AimTo find out how much sugar concentration in that respect is in a cell of a spud. This means I testament put t he potato piston chambers in differentsolutions of different concentrations.There are as well other factors involved, these are Temperature of water Size of potato piston chamber Mass of potato cylinder Volume of solution potato cylinder is in Type of potato Time left in solutionFair TestingIf this experiment isnt a fair test, we depart be collecting the reproachresults, which can lead us to the wrong conclusions. To conduct a fairtest I allow for fix that the experiment is carried out at roomtemperature. The size of the potato is an all-important(a) factor, as theamount of weight lost or gained will alter. in addition the potato cylinderswill be weighed before and after the experiment to fall upon if osmosis hastaken place. The type of potato I will use will stay the same asdifferent potatoes may absorb at different rates.Planned MethodA range of sugar solutions will be arranged with concentrations..Sections of potato will be cut with a scalpel and measured with aruler. Thi s has to be done carefully as the inconsistency of surface areamay allow more or slight osmosis to occur. The mass of each cylinderwill be weighed to ensure consistency. I will do each experiment threetimes so that I can take an average for each sugar solution. By doingthis I will receive more accurate results and therefore incur up a moreaccurate conclusion. I will also use 20 ml of each solution and oftap water. The potato cylinders will then be left for 15 minutes. Whenthe cylinders are take I will clean them with a paper towel, toremove excessiveness moisture, and then re-weigh them.PredictionFor this investigation, I think the lower the concentration of the