La difusió facilitada implica proteïnes que faciliten el moviment de molècules a través de la membrana. En alguns casos les molècules passen a través de canals a l'interior d'una proteïna; a d'altres casos les proteïnes canvien de forma tot permetent el pas de les molècules amb aquest canvi conformacional.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Scheme_facilitated_diffusion_in_cell_membrane-en.svg" title="File:Scheme facilitated diffusion in cell membrane-en.svg">Scheme_facilitated_diffusion_in_cell_membrane-en.svg</a>: <a href="//commons.wikimedia.org/wiki/User:LadyofHats" title="User:LadyofHats">LadyofHats</a> Mariana Ruiz Villarreal</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Imartin6" title="User:Imartin6">Imartin6</a></li></ul>
2012-05-17 16:27
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Scheme_facilitated_diffusion_in_cell_membrane-en.svg" title="File:Scheme facilitated diffusion in cell membrane-en.svg">Scheme facilitated diffusion in cell membrane-en.svg</a>: <a href="//commons.wikimedia.org/wiki/File:Scheme_facilitated_diffusion_in_cell_membrane-en.svg" class="image"><img alt="Scheme facilitated diffusion in cell membrane-en.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Scheme_facilitated_diffusion_in_cell_membrane-en.svg/50px-Scheme_facilitated_diffusion_in_cell_membrane-en.svg.png" decoding="async" width="50" height="22" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Scheme_facilitated_diffusion_in_cell_membrane-en.svg/75px-Scheme_facilitated_diffusion_in_cell_membrane-en.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/9/91/Scheme_facilitated_diffusion_in_cell_membrane-en.svg/100px-Scheme_facilitated_diffusion_in_cell_membrane-en.svg.png 2x" data-file-width="581" data-file-height="254"></a><br>