Osmosis occurs when water diffuses through a
A) semipermeable membrane from high water to low water concentration.
B) nonpermeable membrane from high water to low water concentration.
C) semipermeable membrane from low water to high water concentration.
D) semipermeable membrane from high solute to low solute concentration.

Question

Quizplus · Accepted Answer

Osmosis is the diffusion of water molecules through a semipermeable membrane from an area of high water concentration to an area of low water concentration. Thus, option A correctly describes the process of osmosis. Option B is incorrect because a nonpermeable membrane would not allow any diffusion. Option C is incorrect because water will always move from an area of high concentration to an area of low concentration. Option D describes the process of reverse osmosis, which is the opposite of regular osmosis.

Osmosis Occurs When Water Diffuses Through a