CK-12 Foundation
Ck 12: Osmosis
[Free Registration/Login may be required to access all resource tools.] Tutorial defines osmosis and the difference between osmosis and diffusion. Students will learn how to distinguish solute from solvent and solution and the hypotonic,...
Khan Academy
Khan Academy: Osmosis and Tonicity
Provides an overview of osmosis and tonicity and looks at how osmosis works, as well as the role it plays in the water balance of cells. Describes hypertonic, isotonic, and hypotonic solutions and their effect on cells.
Texas Education Agency
Texas Gateway: Cell Homeostasis: Osmosis
Learn how water flows in and out of solutions in this interactive tutorial.
Science Education Resource Center at Carleton College
Serc: How Do Different Liquids Affect Movement of Materials Across a Membrane?
Students investigate the movement of different materials across the cell membrane of a raw egg once the egg shell has been dissolved in vinegar.
Concord Consortium
Concord Consortium: Molecular Workbench: Osmotic Pressure
View this simulation to observe the process of smaller particles moving through a semipermeable membrane. Temperature is adjustable. [Must download the simulation to engage in the activity]
CK-12 Foundation
Ck 12: Biology: Osmosis
[Free Registration/Login may be required to access all resource tools.] Describes osmosis.
Biology Pages
Kimball's Biology Pages: Transport Across Cell Membranes
This site has information on how facilitated diffusion of ions takes place through proteins, or assemblies of proteins, embedded in the plasma membrane. Includes a helpful diagram.