Answer;
-The size of the pores determine what passes, molecular weight also determines if it will be able to pass.
Explanation;
-The molecule must be smaller than the pore size of the dialysis bag. The dialysis tubing doesn't allow all kinds of substances to pass readily through the pores of its membrane.This means that it is selective in its permeability to substances. The dialysis tubing is permeable to glucose and iodine, but not to starch.
-Dialysis is the separation of smaller molecules from larger molecules in solution by selective diffusion through a semipermeable membrane. Dialysis tubing will be used in this laboratory to simulate a cell membrane. It is made of selectively permeable cellulose tubing perforated with microscopic pores.
