What are the features of facilitated diffusion?
1 It uses protein channels in the membrane and is driven by the energy from ATP.
2 It moves molecules from regions of higher concentration to lower concentration and is driven by the kinetic energy of the molecules which are diffusing.
3 It uses protein channels in the membrane, and the maximum rate of diffusion depends on the number of these channels.
1 )
1 and 2 only
2 )
1 and 3 only
2 and 3 only
4 )
1, 2 and 3
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