Question

Which best describes the difference between osmosis and diffusion?
a. Osmosis is the movement of particles from a high to low concentration, while diffusion is the movement of water from a low particle concentration to a high particle concentration.
b. Diffusion is the movement of particles from a high to low concentration, while osmosis is the movement of water from a low particle concentration to a high particle concentration.
c. Diffusion is the movement of particles from a low to high concentration, while osmosis is the movement of water from a high particle concentration to a low particle concentration.
d. Osmosis is the movement of particles from a low to high concentration, while diffusion is the movement of water from a high particle concentration to a low particle concentration.

Answer 1

Correct answer: 
Diffusion is the movement of particles from a high to low concentration, while osmosis is the movement of water from a high particle concentration to a low particle concentration.

This movement of molecules occurs due to a thermal motion. Diffusion normally occurs between two compartments having difference in concentration. In case of fluid it moves from the region of higher concentration to the region of concentration until a balance is reached. The process of diffusion is very important for the humans as well. The oxygen that humans breathe in gets diffused with the blood.

Answer 2

The right answer is B.

Diffusion is the passive movement of particles from a high concentration to a low concentration in either air or water.

Osmosis is the passive diffusion of water molecules through a selectively permeable (semi-permeable) membrane. Here are three situations involving the concept of osmosis.