Question

A student performed an experiment with bags of dialysis tubing filled with distilled water to model the process of osmosis. Dialysis tubing is a semi-permeable membrane that allows some materials to passively move through the tubing. The dialysis tubing bags were massed on a balance and then placed in beakers with solutions of sucrose of various concentrations, ranging from 0M to 1.0M sucrose. Select which question the experimental design is best addressing?

Answer 1

In this practical, dialysis tubing is used as a surrogate cell membrane for a visual demonstration of osmosis and diffusion. A solution containing large molecules (Starch) and small molecules (Glucose) is placed inside thetubing; which is then placed in a solution containing iodine.