Question

the definition of osmosis is the
a) the movement of solute molecules from a higher concentration to a lower concentration.
b) diffusion of water across a selectively permeable membrane.
c) likelihood that water will diffuse in a particular direction.
d) lower concentration of a solute in a solution.
e) movement of water toward a low solute concentration.

Explanation:

Osmosis is specifically the diffusion of water across a selectively - permeable membrane from an area of higher water concentration (lower solute concentration) to an area of lower water concentration (higher solute concentration). Option a refers to solute movement which is diffusion of solutes, not osmosis. Option c is about the likelihood of water diffusion, not the definition of osmosis. Option d just describes a solute concentration state. Option e is an incomplete description of the water movement process in osmosis.

Answer:

B. diffusion of water across a selectively permeable membrane