Aselectively permeable membrane divides a container in half. one half of the container. side a, is filled with a starch solution, while whe other half, side b, is filled with an iodine tincture. starch is a large macromolecule that forms a milky white solution when dissolved. an iodine tincture contains very small iodide ions and is a brown solution. lodide ions turn dark blue when they react with starch molecules after several hours, side a is dark blue, while side b is brown. which statement describes the diffusion of solutes through the membrane? ded the iodide ions, but the starch mol o both the starch molecules and the iodide ions diffused through the membrane o the membrane excluded both the starch molecules and the iodide ions o the membrane excluded the starch molecules, but the iodide ions diffused through