Facilitated Diffusion and Active Transport





source: http://www.youtube.com/watch?v=1ZFqOvxXg9M&feature=related



This video goes more into depth and talks more about pincytosis, phagocytosis, endocytosis, exocytosis, receptors and concentration gradient.

http://www.youtube.com/watch?v=kfy92hdaAH0&feature=related

Read more with visuals:Movement Across Membranes a PDF file. Talks more about Osmosis, Diffusion and Active Transport.
source: http://219.221.200.61/ywwy/zbsw%28E%29/edetail5.htm






This video gets more on the sientific techinical side, however, it's a great way to understand more on why diffusion happens.

source: http://www.youtube.com/watch?v=3bpfjJeKvvk

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