Biology  5/e   Raven/Johnson
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A large clear plastic bag is a reasonable facsimile of a cell’s plasma membrane. A prokaryote can be represented by a bag with various objects inside to represent their metabolic processes. A large bag with the objects inside of smaller bags represents a eukaryote and its compartmentalizing membrane-bound organelles. One could further place the bag in a box to represent the cell wall of a plant.

Electron micrographs are a must for this material. They can be difficult for students to interpret, therefore accompanying line drawings that simplify the micrograph are beneficial. Or use markers to outline and/or colorize particular structures on either photographs or transparencies.

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