With all the activities inside and outside the cell, how does the cell membrane hold it all together? This program closely examines the structure and function of cell membranes, including compartmentalization, intercellular interaction, regulation of the movement of materials, and as a location for biochemical activities. Using a combination of narration, film footage, and engaging graphics, the program covers the various ways in which materials can cross the cell membrane, such as diffusion, active and passive transport, osmosis, and endo- and exocytosis. The effects of osmosis—plasmolysis and turgor in plants—are also presented. (33 minutes)

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Part of the Series : Cells-The Inside and Out

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