facilitated transport

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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.
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Second is facilitated diffusion, a form of carrier-mediated endocytosis, in which solute molecules bind to specific membrane protein carriers.
Describe the mechanisms employed by cells to transport materials across membranes: simple diffusion, diffusion through channels, facilitated diffusion, and active transport.
The body can completely absorb small quantities of dietary fructose by facilitated diffusion, but larger quantities result in unabsorbed fructose that becomes an osmotic load and can be fermented in the intestines by anaerobic bacteria.

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