Curated OER
WET Science Lesson #5: Pass the Salt Please! (How Road Salt Affects Wetlands)
As an anticipatory set, biologists listen to the story of Ruth Patrick, a scientist who used algae to detect water quality. They observe a demonstration of osmosis and diffusion. In their lab groups, they place Elodea stalks in...
City University of New York
The World of Cells: Plasma Membrane
This is a basic description of the structure of cell membranes. Site provides colorful pictures of each membrane.