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facilitated diffusion

facilitated diffusion

A Dictionary of Biology | 2004 | Copyright

facilitated diffusion The transport of molecules across the plasma membrane of a living cell by a process that involves a specific transmembrane carrier (see transport protein) located within the plasma membrane but does not require expenditure of energy by the cell. The carrier combines with a molecule at one face of the membrane, then changes shape so the molecule is moved through the membrane and released at the opposite face. It enables the diffusion through the membrane of molecules that otherwise could not pass through. Compare active transport.
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facilitated diffusion

A Dictionary of Zoology | 1999 | | Copyright

facilitated diffusion A carrier-mediated membrane-transport mechanism, driven by a diffusion gradient, that is important in the transport of materials into and out of cells.
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MICHAEL ALLABY. "facilitated diffusion." A Dictionary of Zoology. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "facilitated diffusion." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O8-facilitateddiffusion.html

MICHAEL ALLABY. "facilitated diffusion." A Dictionary of Zoology. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-facilitateddiffusion.html

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facilitated diffusion

A Dictionary of Plant Sciences | 1998 | | Copyright

facilitated diffusion A carrier-mediated membrane transport mechanism that is driven by a diffusion gradient.
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MICHAEL ALLABY. "facilitated diffusion." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "facilitated diffusion." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O7-facilitateddiffusion.html

MICHAEL ALLABY. "facilitated diffusion." A Dictionary of Plant Sciences. 1998. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-facilitateddiffusion.html

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