Correct Answer - D
Uphill transport is a process in which diffusion of a component occurs from a less concentrated stream to a more concentrated permeable stream. Facilitated transport is a form of passive transport in which materials are moved across the plasma maembrane by a transport protein down their concentration gradient.
It requires integral membrane proteins and highly selective biological membranes to cross. Saturation occurs in facilitated, diffusion because not enough carries may be available to handle all the free solute molecules. The rate of movement may reach a maximum.
Thus. uphil transport does not partain to faciliated transport.
