A few drops of Lugol's iodine solution placed in a beaker of water will turn the water red. A starch solution was poured into a length of dialysis tubing, and the ends were tied. The starch solution was white. The tubing was then dropped into the beaker of iodine solution. After 10 minutes, the white starch solution turned black, and the iodine water remained red. If the dialysis tubing represents a cell membrane in this demonstration, what process is being observed in the changing color of the starch solution? (4 Points) A permeable membrane diffuses chemicals in and out of the cell. A semipermeable membrane will diffuse selected molecules. Iodine can not pass trough the membrane. Starch can easily diffuse through the membrane.