Question

study the illustration. the small blue spheres represent water molecules. in which direction will water molecules move across the membrane? water will move from a to b. water will move from b to a. there will be no net movement of water.

Explanation:

Step1: Identify osmosis principle

Osmosis is the diffusion of water across a semi - permeable membrane from an area of higher water concentration to an area of lower water concentration.

Step2: Analyze water concentration

In the illustration, side B has a lower water concentration (more solutes relative to water) compared to side A. So water will move from the area of higher water concentration (side A) to the area of lower water concentration (side B).

Answer:

Water will move from A to B.