What is the difference between osmosis and diffusion?

1 Answer
Nov 26, 2015

Osmosis is the movement of water molecules, but diffusion is for any molecule. Osmosis happens across a partially permeable membrane, while diffusion does not need a membrane, it happens directly in the fluid.

Explanation:

This is osmosis:
www.bbc.co.uk/staticarchive/93b9460cc90840060e57046a501547ecbfe82d41.gifwww.bbc.co.uk/staticarchive/93b9460cc90840060e57046a501547ecbfe82d41.gif

This is diffusion(could happen in liquids or gases)
:
www.bbc.co.uk/staticarchive/439c237c545d96dc84cd5d54db68dc4870f8be9f.gifwww.bbc.co.uk/staticarchive/439c237c545d96dc84cd5d54db68dc4870f8be9f.gif