What Is The Difference Between Simple Diffusion And Facilitated Diffusion

Simple diffusion is a process that transports molecules from a region of high concentration to a region of low.

Facilitated diffusion may or may not require energy from atp. Simple diffusion does not require energy from atp. The facilitated diffusion can be inhibited by specific inhibitor which binds to the carrier molecules. Simple diffusion is always a passive process.

Simple diffusion entails movement of particles from a region of high concentration to a region of low concentration across a membrane without the assistance of carrier molecules. These molecules use facilitated diffusion which like simple diffusion requires no energy input. Facilitated diffusion may be an active or passive process. Simple diffusion is a passive transport as thus doesn t require any energy.

To pass across the membrane a molecule temporarily binds with a carrier transport protein in the plasma membrane and is transported from an area of higher concentration to one of lower concentration. 2 in simple diffusion small hydrophobic molecules can pass but those which are not small and hydrophobic pass through facilitated diffusion. The speed of simple diffusion is relatively low. The main difference between simple diffusion and facilitated diffusion is that simple diffusion is an unassisted type of diffusion in which a particle moves from higher to a lower concentration across a membrane whereas facilitated diffusion is the transport of substances across a biological membrane through a concentration gradient by means of a carrier molecule.

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Facilitated diffusion entails movement of substances across a biological membrane through a concentration gradient by means of a carrier molecule. Facilitated diffusion is also a passive transport mechanism that doesn t require any energy but some facilitated diffusion processes can be active.