Question

Which statement BEST describes osmosis?

The movement of water and salts through a semi-permeable membrane.
The movement of water molecules through a semi-permeable membrane.
Water and dissolved substances moving from low to high concentration.
Movement of water molecules from a concentrated salt solution.

Answer 1

Explanation:

The direction of the water flow is opposite of the gradient for the solute diffusion. The direction of the water flow is the same as the gradient for the solute diffusion.

Answer 2

Answer:

Osmosis is defined as the movement of water molecules from a region of higher concentration to a region of lower concentration across a semi-permeable membrane