Chapter 4: The central Vacuole

Most of the volume of plant cells is taken up by the central vacuole. It has several functions. It controls the water balance, is dump site for hazardous wastes, store sugars and amino acids.

These dissolved substances make it very hypertonic to the cell cytoplasm. So water enters the vacuole wich swells. This pressure that pushes the cytoplasm against the cell wall is called turgor pressure. The shape anf rigidity of the cell depends on turgor pressure.


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Key terms: turgor pressure,

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Virtual Cell:



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