Simple-sugar components: fructose
glucose
galactose

Use the molecular structures to predict which of the six solutions will test positive for glucose. Write your
prediction in the answer space. Provide the reasoning behind your prediction.

This experiment was conducted to investigate the selective permeability of dialysis tubing. The permeability of the tubing to glucose, starch and iodine (potassium iodide) was tested. The dialysis tubing was clipped to form a bag so that glucose and starch was fed into the bag through the other end, and was also clipped to avoid the seeping of the solution.