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Biology Coursework - Osmosis

Aim:

The aim of this investigation is to discover the concentration of sugar within the cells of potatoes.

Prediction:

Osmosis is the net movement of water molecules in cells from a high to low water potential through a partially permeable membrane as shown below.

In plants, when a cell has a high water potential and contains a lot of water is known as turgid. Cells with low water potential and less water are known as plasmolysed. They have the appearance of being sunken and smaller where as turgid cells are swollen and fat as shown below.



In this investigation I will be using osmosis in the cells of potatoes and attempting to discover the concentration of sugar in the cells of the potatoes. I hope to achieve this by placing the potatoes into solutions of sugar and water of known concentration. This will enable me to view how the potato cells change while they carry out osmosis, wether they lose, gain or retain the same mass. I......

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Approximate Word Count: 2640
Approximate Pages: 11 (250 words per double-spaced page)

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