facilitated diffusion
Diffusion across the plasma membrane that is aided by a carrier.

Microbiology. . 2009.

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  • Facilitated diffusion — (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism. Polar… …   Wikipedia

  • facilitated diffusion — diffusion across a plasma membrane or other biological membrane in which the molecules to be transported form complexes with specific transport proteins (uniporters) that shuttle them across the membrane down the concentration gradient and… …   Medical dictionary

  • facilitated diffusion — (= 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… …   Dictionary of molecular biology

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  • Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …   Wikipedia

  • diffusion — 1. The random movement of molecules or ions or small particles in solution or suspension under the influence of brownian (thermal) motion toward a uniform distribution throughout the available volume; the rate is relatively rapid among liquids an …   Medical dictionary

  • Colloid-facilitated transport — designates a transport process by which colloidal particles serve as transport vector [1] of diverse contaminants in the surface water (sea water, lakes, rivers, fresh water bodies) and in underground water circulating in fissured rocks [2]… …   Wikipedia

  • Passive transport — means moving biochemicals and other atomic or molecular substances across membranes. Unlike active transport, this process does not involve chemical energy, because, unlike in an active transport, the transport across membrane is always coupled… …   Wikipedia

  • Membrane potential — Differences in concentration of ions on opposite sides of a cellular membrane lead to a voltage called the membrane potential. Many ions have a concentration gradient across the membrane, including potassium (K+), which is at a high inside and a… …   Wikipedia

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