Question

what is porins ? what role do they play in diffusion

Answer 1

the parents are proteins that form used for in the outer membrane of the plastics mitochondria and some bacteria following molecules up to the size of small protein to pass through does they play an important role in facilitated diffusion

Answer 2

porins are proteins which form huge pores in the outer membrane of plastids, mitochondria and in some bacteria. they act as a channel in that are specific to different types of molecules. membranes transport proteins,porins are large enough to allow passive diffusion.

hope this helps...