Simulation + game

Cell Membrane Transport Lab

Diffusion · osmosis · facilitated diffusion · active transport

Learning outcomePredict molecule movement from concentration, permeability, channels, and ATP availability.

Learning challenge

Outside concentration80 mMInside concentration20 mMMembrane permeability0.50ATP availability50 %

Passive flux proxy30.0

Active capacity6.0

Net tendencyInward

Learning focus

Compare diffusion, facilitated diffusion, osmosis-like gradients, and energy-dependent transport.

passive flux J ∝ P(Cout − Cin); active transport requires energy