In this experiment we are going to be studying the affects of Osmosis :: GCSE Biology Osmosis Coursework

In this essay we are going to be studying the affects of Osmosisin Potatoes. Osmosis is the changeover of piddle from a region of high pissing ducking through and through a semi-permeable tissue social class to a region of small urine ingress.A semi-permeable tissue layer is a very a very thin layer of material, carrel membranes are semi-permeable. These forget take some things to foul through, provided testament prevent other things from implementing through. Forexample, booth membranes bequeath allow little(a) molecules such as Oxygen, weewee, Carbon Dioxide, Ammonia, Glucose, amino acids, and so on to passthrough. further they will not allow larger molecules such as Sucrose,Starch, and protein, etc. to pass through.A region of high concentration of urine supply is either a very dilutesolution of, for example, sucrose, or refined Water. In each eggshell thitheris a lot of water on that point is a high concentration of water.A region of low concentration of wa ter is a concentrated solution ofsomething, for example, sucrose. In this case there is much lesswater.When one puts an animal or pose carrell into a liquid which containswater three things can happen.If the speciality which surrounds the cubicle has a higher waterconcentration than the carrell, the cell will earn water by osmosis.Water molecules are free to pass crossways the cell membrane in twodirections, but to a greater extent water will enter the cell, than leave it. The issuance of this is that water enters the cell and the cell is likely toswell up.If the medium has exactly the comparable water concentration as the cell,there is no general driving force. The cell will abide the same size of it. Waterwill cross the cell membrane in both directions, but the amount go in it will be the same amount leaving it, so there is no overallmovement of water. The cell will stay the same size.If the medium has a lower berth concentration of water than the cell, thecell will lose water by osmosis. The water will cross the cellmembrane in both directions, but now more water leaves the cell thanentering it. The Result of this will mean the cell will shrink.VariablesIn this test I am going to cut 12 potato sections, I am going totry keeping these roughly the same size and pack. They will bearound 4cm long, and all will start an amount weight of 2.74g.The liquid that the potato sections will be put into will have antithetical concentrations, but they will all have a mint of 30 cm.I am going to have 6 contrasting test tubes which will have the samevolumes but different concentrations.In this experiment we are going to be studying the affects of Osmosis GCSE Biology Osmosis CourseworkIn this experiment we are going to be studying the affects of Osmosisin Potatoes. Osmosis is the passage of water from a region of highwater concentration through a semi-permeable membrane to a region oflow water concentration.A semi-permeable membrane is a very a very t hin layer of material,cell membranes are semi-permeable. These will allow some things topass through, but will prevent other things from passing through. Forexample, cell membranes will allow small molecules such as Oxygen,water, Carbon Dioxide, Ammonia, Glucose, amino acids, etc. to passthrough. But they will not allow larger molecules such as Sucrose,Starch, and protein, etc. to pass through.A region of high concentration of water is either a very dilutesolution of, for example, sucrose, or Pure Water. In each case thereis a lot of water there is a high concentration of water.A region of low concentration of water is a concentrated solution ofsomething, for example, sucrose. In this case there is much lesswater.When one puts an animal or plant cell into a liquid which containswater three things can happen.If the medium which surrounds the cell has a higher waterconcentration than the cell, the cell will gain water by osmosis.Water molecules are free to pass across the cell membran e in bothdirections, but more water will enter the cell, than leave it. TheResult of this is that water enters the cell and the cell is likely toswell up.If the medium has exactly the same water concentration as the cell,there is no overall movement. The cell will stay the same size. Waterwill cross the cell membrane in both directions, but the amountentering it will be the same amount leaving it, so there is no overallmovement of water. The cell will stay the same size.If the medium has a lower concentration of water than the cell, thecell will lose water by osmosis. The water will cross the cellmembrane in both directions, but now more water leaves the cell thanentering it. The Result of this will mean the cell will shrink.VariablesIn this experiment I am going to cut 12 potato sections, I am going totry keeping these roughly the same size and weight. They will bearound 4cm long, and all will have an average weight of 2.74g.The liquid that the potato sections will be put into will havedifferent concentrations, but they will all have a volume of 30 cm.I am going to have 6 different test tubes which will have the samevolumes but different concentrations.