Question

Facilitated diffusion

Answer 1

Explanation:

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.

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.