Purpose: Students will investigate how the permeability of a simulated cell membrane affects the movement of water, starch and iodine across the simulated membrane.
Starch + Iodine
Starch + Iodine = Mixed
Starch placed into Cellulose Tubing and end of tubing sealed
Cellulose tubing containing starch added to beaker with 150 ml of water
Beginning of Experiment TIME = 0
Cellulose tubing : mass 12.38 g
End of Experiment TIME = 10 minutes
Cellulose tubing : mass 12.98 g