how do diffusion, facilitated diffusion, osmosis, and active transport differ?

Question

anonymous · Answer

These should help: http://en.wikipedia.org/wiki/Diffusion http://en.wikipedia.org/wiki/Facilitated_diffusion http://en.wikipedia.org/wiki/Osmosis http://en.wikipedia.org/wiki/Active_transport JSYK you posted your question in History.

anonymous · Answer

I ment to be in biology but then again theres not a lot of ppl online in biology. and my homework is cell biology and chemistry and I cant get on the chemistry one.

anonymous · Answer

It's fine. Thought you just made a mistake. Those links work or you need more help?

anonymous · Answer

yeaah cause I don't want to write the defintions, you know, just how they differ. lol

anonymous · Answer

Well, diffusion is basically the movement of substances to even out high and low areas. Facilitated diffusion isn't diffusion (despite the name ._. ), it's a type of transport that uses proteins to move molecules through the cell membrane. Active transport is like Facilitated diffusion (AKA passive transport), except for the fact that it uses chemical energy to move the molecules. Osmosis is a type of Active transport that brings water into the cell.

anonymous · Answer

Best example of diffusion would be like stirring salt into water. It dissolves and evens out.

anonymous · Answer

thanks (:

anonymous · Answer

No problem.