The energy source is allways ATP. (P.s. It's not "disffusion", it is said
DKafkewitz wrote in message
<20000623144325.25144.00002850 at ng-me1.aol.com>...
>Re: membrane transport in procaryotes. Is the word "uniporter" a synonym
>facillitated disffusion or are uniporters a class of energy-reguiring
>transport systems ? If so what is the energy source ? References I have
>are silent on this issue and texts seems to ignore it altogether.