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单词 facilitated transport
释义 DictionarySeepassive transport

facilitated transport


facilitated transport

[fə′sil· ə‚tād·əd ′trans‚pȯrt] (physiology) The transport of certain materials across a cell membrane, down a concentration gradient, assisted by enzymelike carrier proteins embedded in the membrane and without the explicit provision of energy.

facilitated transport


fa·cil·i·tat·ed trans·port

the protein-mediated transport of a compound across a biomembrane that is not ion-driven; a saturable transport system. Synonym(s): passive transport

facilitated transport

any carrier-mediated transport (see CARRIER MOLECULE in a membrane where diffusion is aided by the molecule to enhance the mobility of the diffusing substance, but in which there is no ACTIVE TRANSPORT or energy expenditure by the cell.
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