WA3 Bio Lab

WA3 Bio Lab - Title ABSTRACT The mass can determine the...

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Title ABSTRACT The mass can determine the movement of water in and out of the potato. The potato was tested to determine the relative osmotic concentration. The potato disks were monitored by swirling the cups ever ten minutes over a period of an hour. The more sucrose we added to the water the less the potato disk weighted. INTRODUCTION The passing through of molecules of permeable membranes is determined by the shape, charge, and polarity of the molecule. Permeable membranes select what molecules pass through some cross the membrane freely; some cross with assistance, and others do not cross at all (Gregory, 2006). The net movement of water from a solution with a low osmotic concentration to a solution with a high osmotic concentration is osmosis. There are three types of solutions hypotonic, hypertonic, or isotonic. When a solution has more solute it is hypertonic, when the solution has less solute it is hypotonic, and when the there is an equal amount of solute it is isotonic (Wischusen et al., 2010). It was hypothesized that the mass of the potato cell would decrease as the concentration of sucrose increased. The purpose of the experiment was to
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test if the addition of sucrose would affect the rate of hydrolysis. In this particular experiment, the effect of increasing sucrose to the solution, with potato segments, was tested. MATERIALS AND METHODS
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This note was uploaded on 09/08/2011 for the course BIO 1208 taught by Professor Wischusen during the Spring '11 term at LSU.

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WA3 Bio Lab - Title ABSTRACT The mass can determine the...

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