Page 16 - 02 Cells Biology Notes

• plant cells become flaccid (soft and limp), cytoplasm is no longer
pressed against the cell wall. The plant loses it firmness and begin
to wilt.
• animal cells shrink, become crenated.
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Common misconceptions
Sugar and salt do not move by osmosis. Cell membranes prevent them
entering or leaving the cell.

Try this

A potato was set up as shown in the figure below (left-hand side). The
investigation was left for several hours. The results are shown on the right-
hand side of the figure.

1. Describe what happened to
a. the water in the disk
b. the salt solution in the hollow in the potato. [2 marks]
2.