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To investigate how the concentration of water in a sucrose solution affects a potato using different concentrations of sucrose solution and measuring the effects.
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Aim: To investigate how the concentration of water in a sucrose solution affects a potato using different concentrations of sucrose solution and measuring the effects. Hypothesis: Osmosis is the net movement of water molecules across a selectively permeable membrane from an area of high concentration to low concentration. The selectively permeable membrane. A selectively permeable membrane is a type of barrier that will only allow certain molecules through it. It acts like a sieve in which microscopic holes only let small molecules through it and keep out larger molecules, therefore 'selecting' smaller molecules. An example of the usage of a selectively permeable membrane is in a dialysis machine. Used as an artificial kidney, a dialysis machine allows urea through its membrane but does not allow protein to escape. This is because protein molecules are larger than urea molecules. Urea is mainly made up of water molecules, H2O, which are possibly the smallest compound...
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