Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins. Being passive, facilitated transport does not directly require chemical energy fro...
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http://en.wikipedia.org/wiki/Facilitated_diffusion
(from the article `poison`) Transport systems that use carrier molecules but which do not require energy to proceed are called facilitated diffusion. A chemical first binds to ...
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http://www.britannica.com/eb/a-z/f/2
<physiology> A process by which substances are conveyed across cell membranes faster than would be possible by diffusion alone. ... This is generally achieved by proteins that provide a hydrophilic environment for polar molecules throughout their passage through the plasma membrane, acting as either shuttles or pores. ... See: symport, antipo...
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http://www.encyclo.co.uk/local/20973
(= passive transport) A process by which substances are conveyed across cell membranes faster than would be possible by diffusion alone. This is generally achieved by proteins that provide a hydrophilic environment for polar molecules throughout their passage through the plasma membrane, acting as either shuttles or pores. See symport, antiport, uniport.
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http://www.encyclo.co.uk/visitor-contributions.php
Type: Term See: facilitated transport
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http://www.medilexicon.com/medicaldictionary.php?t=24767
(fua-sil;u1-ta;tid) The carrier-mediated transport of molecules through the cell membrane along the direction of their concentration gradients. It does not require the expenditure of metabolic energy.
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http://www.mhhe.com/biosci/abio/glossary.mhtml
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