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The Effects of Osmosis on Potato Cells

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Length: 1142 words (3.3 double-spaced pages)
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The Effects of Osmosis on Potato Cells


The aim of this investigation is to see the effect of varying
concentrations of glucose solution on the amount of osmotic activity
between the solution and a potato chip. An investigation into
Plasmolysis in onion cells was undertaken prior to this experiment, in
order to gain some knowledge of osmosis to enable a hypothesis to be

Preliminary Work and Scientific Knowledge

Osmosis is defined as the net movement of water molecules from a
region in which they are highly concentrated to a region in which they
are less concentrated. This movement must take place across a
partially permeable membrane, like a cell wall, which allows small
molecules like water through but does not let larger molecules
through. The molecules continue to diffuse until the area in which
they are found has an even distribution of molecules all round, inside
and outside of the cell. Naturally, an environment that is identical

... middle of paper ...

... Safety

Safety is an important aspect of every experiment whatever the initial
interpretation of danger. In this experiment a sharp scalpel is being
used and could injure someone if misused or picked up at the wrong
end, so great care needs to be taken when cutting the chips up. Also,
the affect of the solution to the body is unknown, so care must be
taken into making sure that none of the solution enters the body
through the mouth or eyes and at the end of the investigation, hands
must be washed thoroughly.

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