Membrane Transport:
ley.com/college/pratt/0471393878/student/animations/membrane_transport/index.html
The Sodium potassium Pump:
http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__how_the_sodium_potassium_pump_works.html
Diffusion and Osmosis virtual lab:
http://www.phschool.com/science/biology_place/labbench/lab1/intro.html
interactive cellular transport animation:
http://www.wiley.com/legacy/college/boyer/0470003790/animations/membrane_transport/membrane_transport.htm
