question simple diffusion and facilitated diffusion are related in that both responses require protein carriers require protein carriers depend on a concentration gradient depend on a concentration gradient occur via contractions of cytoskeletal elements attached to membrane proteins occur via contractions of cytoskeletal elements attached to membrane proteins are endergonic processes and thus require the hydrolysis of atp are endergonic processes and thus require the hydrolysis of atp occur in eukaryotic cells but not in prokaryotic cells

Diffusion is the process of transfer of solute molecules from one place to another. The direction of movement is from the region of high concentration to its region of low concentration. The movement does not require any energy.

Facilitated diffusion is also a type of diffusion where the movement of molecules is along the gradient i.e., from high to low. However here the molecules to not get transported on their own, instead they move by the help of transporting proteins and hence the name facilitated diffusion.

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