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How does changing sucrose concentration affect the process of osmosis and therefore plant material?

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How does changing sucrose concentration affect the process of osmosis and therefore plant material? Introduction We will be investigating the effect of changing sucrose concentration on osmosis and therefore plant material. Osmosis is the flow of one constituent of a solution through a membrane while the other constituents are blocked and unable to pass through the membrane. Experimentation is necessary to determine which membranes permit selective flow, or osmosis, because not all membranes act in this way. Many membranes allow all or none of the constituents of a solution to pass through, only a few allow a selective flow. In a classic demonstration of osmosis, a vertical tube containing a solution of sugar, with its lower end closed off by a semi-permeable membrane, is placed in a container of water. ...read more.


The level of liquid in the tube of sugar solution will eventually rise until the flow of water from the tube of sugar solution, under the influence of hydrostatic pressure, equals the flow of water into the tube. The hydrostatic pressure establishing this equality of flow is called osmotic pressure. A variety of physical and chemical principles are involved in the osmosis in animals and plants. Osmosis affects the size and turgidity of a plant cell, this means that when a plant cell is placed in a solution that has a higher sucrose concentration the plant cell, by using osmosis will expand and therefore becomes turgid, Turgid means swollen and hard The diagram below explains this process. ...read more.


I also believe there will be some correlation between sucrose concentration and the expansion of the cell. Prediction I predict that the higher the concentration of sucrose, the more the cell will expand. Method I will place 4 pieces of potato in 4 separate beakers containing different concentrations of Sucrose. I will keep the potatoes the same size so as to keep the experiment fair. I will repeat the experiment twice as to get a better set of results. Apparatus For my investigation I will need: 4 beakers 4 slices of potato 4 solutions with varying concentrations of sucrose I will set up this apparatus as shown below. ...read more.

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