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The Eukaryotic Cell

There are limitations to approaching the interior of the cell as an aqueous solution environment. This is because protoplasm is not a solution. Protoplasm is an organized colloidal complex of organic and inorganic substances. It is not homogeneous at the molecular level. It is a gel in which water is a primary component.

Colloid chemistry, in fact, was started in the nineteenth century in response to the discovery of protoplasm.

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