Concord Consortium
Diffusion Across Semipermeable Membranes
Mitochondria use two semipermeable membranes to work properly. Young scientists adjust the pore size for two membranes. They then observe the diffusion of two different sizes of molecules.
Concord Consortium
Diffusion Across a Semipermeable Membrane
Semipermeable membranes allow water to go through—but not larger molecules. The simulation encourages pupils to adjust the membrane pore size to understand how this works. It also provides a way to trace the movement of a single molecule.
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]
Other
Biology Simulations: Diffusion and Osmosis
This simulation can be used to study molecule movement across a semipermeable membrane.