Question

write short note on facilitated diffusion

Answer 1

Facilitated diffusion is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific trans membrane integral proteins.

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Answer 2

Answer:

• Selective transport of large molecules across the cell membrane is called as facilitated diffusion.
• It takes place in presence of special proteins (porins) but does not involve expenditure of energy.
• Water soluble (hydrophilic) substances are transported by eight different aquaporins.