Diffusion Across a Semipermeable Membrane

Lab type: 
Virtual lab
Lab owner: 
Concord Consortium
Contact person: 
Concord Consortium
Age range: 
10-12, 12-14, 14-16
English, Italian
Level of difficulty: 
Level of interaction: 
Booking required: 
Lab description and primary aims of the lab: 

Explore the role of pore size in the diffusion of a substance across a membrane. Diffusion is the process of a substance spreading out from its origin. Molecules diffuse through random molecular motion. Diffusion is always happening, even when a system appears to have reached equilibrium, because molecules are always moving. Cells are selectively permeable, meaning that their membranes allow some substances to cross easily while others are unable to cross without assistance. Cell membranes are selectively permeable, in part because its pores are small, allowing the cell to prevent larger molecules from moving across the membrane.
The primary aim of the lab is:
1) To learn about Diffusion, molecular motion and Cell membranes.

Technical requirements: 

Hardware Compatibility

  • Desktop
  • Android (Mobile)
  • iOS (Mobile)

Browsers Compatibility

  • Mozilla Firefox
  • Google Chrome
  • Internet Explorer
  • Safari


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