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An Investigation to Determine the Water Potential of a potato tuber Background This experiment involves the process of osmosis. Osmosis is the process by which water moves across a membrane is known as osmosis and is described as the diffusion of water through a selectively permeable membrane The direction and amount of movement of water is dependant on the water potential. The water potential is based on the number and concentration of water molecules a solution has. For example, distilled water has the highest water potential, as it is the purest state of water. A highly concentrated solute solution has a low water potential. The highest water potential value (which distilled water has) is 0. Any dissolved solute-solution has a negative water potential value. Water potential is measure in the units Pascal. Water moves from a region of high water potential to a region of low water potential. Therefore, it moves down...

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