Simple diffusion, the movement of particles from an area where their concentration is high to an area that has low concentration. One of the different ways in wich molecules move in cells.
2007-02-04 (English original); 2010-09-15 (French translation)
2010-09-15
Translation of <a href="//commons.wikimedia.org/wiki/File:Scheme_simple_diffusion_in_cell_membrane-en.svg" title="File:Scheme simple diffusion in cell membrane-en.svg">Image:Scheme_simple_diffusion_in_cell_membrane-en.svg</a>