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
there will be no net movement of water
water will move from b to a

Explanation:

Osmosis is the movement of water molecules from an area of higher water concentration to an area of lower water concentration across a semi - permeable membrane. In the given illustration, there are more water molecules (small blue spheres) in area A compared to area B.

Answer:

Water will move from A to B.