Active transport is like facilitated diffusion in that both processes

Asked by maham237 @ 19/05/2021 in Biology viewed by 282 People

facilitate the movement of water through the phospholipids of the plasma membrane move molecules down their concentration gradient require the presence of proteins in the plasma membrane that move molecules from one side of the plasma membrane to the other do not require a source of energy

Answered by maham237 @ 19/05/2021

Answer:

require the presence of proteins in the plasma membrane that move molecules from one side of the plasma membrane to the other

Explanation:

Both facilitated diffusion and active transport require membrane protein to allow the transport of polar and large molecules from the non-polar core of the membrane.

Facilitated diffusion uses channels or carriers for the purpose. Both channels and carriers are integral membrane proteins. Channels form the specific path to allow the movement while carrier proteins undergo changes in the shape to facilitate the transport.

Active transport also uses the integral membrane proteins to transport otherwise polar and large molecules against their concentration gradient. These are mostly pumps that use the energy of ATP to serve in active transport. Example: Na-K pump

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