Question

a laboratory investigation involves putting a 20% sucrose solution into a dialysis bag, and placing the bag in a beaker of 5% sucrose solution, as shown in the diagram below. the bag is permeable to water, but not to sucrose. this models a cell in a liquid environment. which statement best describes what happens to the bag after 30 minutes? a the bag will become smaller, since water will move from the bag into the beaker. b the bag will become larger, since water will move from the beaker into the bag. c the bag will become larger, since sucrose will move from the beaker into the bag. d the bag will become smaller, since sucrose will move from the bag into the beaker.

Explanation:

The dialysis bag is semi - permeable, allowing water but not sucrose to pass through. There is a higher water concentration in the beaker (95%) compared to the bag (80%). Osmosis will occur, with water moving from an area of higher water concentration (beaker) to an area of lower water concentration (bag).

Answer:

B. The bag will become larger, since water will move from the beaker into the bag.