Question

A) Dialysis bags can be used as models of cells to explore the movement of materials into and out of cells. Students saker investigation with a dialysis bag containing a 2% iodine solution in a beaker containing a 9% starchibution as shown in the figure. Starch turns blue-black in the presence of iodine olutio dialysis bag is permeable to water and iodine but not to starch.

Beaker

9% Starch Solution

Dialysis Bag with 2% Iodine Solution

Which two observations most accurately predict what will occur in the investigation?

(4 points)

The concentration of starch in the dialysis bag will increase.

The solution in the beaker will turn blue-black.

The mass of the dialysis bag will increase.

The mass of the dialysis bag will decrease.

The solution in the dialysis bag will turn blue-black.

Answer 1

The two most accurate predictions for this investigation are:

1) The concentration of starch in the dialysis bag will increase.
2) The mass of the dialysis bag will decrease.