Compare and contrast diffusion and facilitated diffusion?

Answer 1

They both require a trans membrane protein.

Facilitated diffusion does not require energy whereas active transport requires energy.

Facilitated diffusion takes place when there is a net movement of molecules from a region of high concentration to a region of low concentration whereas active transport takes place when there is a net movement of molecules from a region of low concentration to a region of high concentration.

Answer 2

Active transport and facilitated diffusion are different in many ways but one way they are similar is they both use transport protein. A way they are different is facilitated diffusion does not require energy input from the cell while active transport does require energy input from the cell. Another way is facilitated diffusion is classified as passive transport, unlike active transport which is classified as active transport. The last way they differ is for the direction of movement facilitated diffusion goes with concentration gradient, while active transport goes against concentration gradient.

Answer 3

simple diffusion and facilitated diffusion are similar and different

similarity : both of them helps the passage of molecules down their concentration gradient ( from higher concentration to lower concentration ) and no energy required in both

difference : facilitated diffusion might use carrier proteins to help move molecules such as glucose through the plasma membrane or channel proteins to move water rapidly (aquaporin)