现在我心里有数多了，谢谢谢谢~~~还有啊watercooler，那种Protein Channel在Campbell的课本上也叫做Facilitated Diffusion，算是Passive Transport，当然有别于Simple Diffusion。谢谢你的答案，确实是用另一个角度来看这个问题。 :)))
passive transport can be called diffussion
but this faciliated diffusion does not function to the maintenance and establish this potential. or I should say, it does contribute to the equilibrium of the ion concentration on two sides, but the sensing proteins which really function for potentials are not them.
Huasing Association 1999 - 2013