Factors Affecting Osmosis.

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FACTORS AFFECTING OSMOSIS

AIM

The aim of this experiment is to investigate the factors affecting osmosis. I have chosen to investigate the effect varying concentration of sucrose solution has on the amount of osmotic activity between the sucrose solution and a plant cell. The plant cell I have chosen to use is a potato tuber from which I plan to cut potato chips of equal length which I will place in test tubes filled with varying concentrations at equal volumes of sucrose solution. After a set amount of time I will remove the potato chips and record the change in length.

BACKGORUND KNOWLEDGE

High water potential is a solution which has a high concentration of water and a low concentration of solute (e.g. sugar, sucrose or salt) or no solute at all. Therefore it can either be a very dilute solution of something like sucrose or pure water, however in each case there is a lot of water. Whereas low water potential is the opposite of high water potential being a solution of low concentration of water and high concentration of solute (sugar, sucrose or salt). Hence it can be a concentrated solution of something like