Is it all about concentration? Explore the description of a semipermeable membrane with a video highlighting illustrations of the membrane and its function. See how concentrations of molecules move back and forth across the...

Provide your class with a simple explanation of channel protein movement. Pupils view a short video segment and explore how channel proteins move ions across a plasma membrane. They conclude the lesson with a short discussion of...

This lesson will describe the structure and function of the plasma membrane of a cell.

A sometimes humorous look at plant and animal eukaryotic cells. Learn about specialization and compartmentalization in cell biology through this YouTube video. [9:16]