The force required to prevent the movement of water across a selectively permeable membrane is the
A) hydrostatic pressure.
B) diffusion pressure.
C) osmotic pressure.
D) membrane pressure.
E) selective pressure.

Question

Quizplus · Accepted Answer

The force required to prevent the movement of water across a selectively permeable membrane is known as osmotic pressure. Osmotic pressure is generated by solutes, such as salts or sugars, in a solution that cannot pass through the membrane but can attract water molecules to one side or the other. As the concentration of solutes increases on one side of the membrane, the osmotic pressure also increases, making it more difficult for water molecules to pass through the membrane.

The Force Required to Prevent the Movement of Water Across