When is facilitated diffusion necessary?

When the molecules are too large.
When the molecules are insoluble.
When the direction of movement is opposite to Natural diffusion.
None of the above

Question

When is facilitated diffusion necessary?

When the molecules are too large.
When the molecules are insoluble.
When the direction of movement is opposite to Natural diffusion.
None of the above

anonymous · Answer

b lol sorry it took me so long to answer lol

anonymous · Answer

Its okay im not really being timed or anything its just a study guide thing im working on :)

anonymous · Answer

oh okay lol any more?

anonymous · Answer

Lol yes :)

anonymous · Answer

let me see em:D lol

anonymous · Answer

The natural tendency of molecules to move from higher to lower concentrations is...
Diffusion
Transport 
Dissolution
Fermentation
Solubility

anonymous · Answer

diffusion

anonymous · Answer

Thats what I had! lol okay do you get a different medal each time or do you want me to just  close the question and then let you answer it there...?

anonymous · Answer

well you can only get one medal for the one question thing so you would have to close and open a new one. but it doesnt matter you can just keep posting this one if ya want(:

anonymous · Answer

Umm well I want you to get the medals lol