Answer:
Difference
between diffusion and facilitated diffusion is as follows
Diffusion
Facilitated Diffusion
In diffusion, molecules move
in a random fashion, the net result being substances moving from regions of
higher concentration to regions of lower concentration.
Diffusion is a slow process
and is not dependent on a 'living system'. No expenditure of energy takes
place.
The diffusion of substance
against a concentration gradient, which is facilitated by the proteins is
known as facilitated diffusion without expenditure ofATP energy.
The porins proteins that form
huge pores in the outer membranes of the plastids, mitochondria and some
bacteria allow molecules up to the size of small proteins to pass through.
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