Facilitated Diffusion via a Protein Channel
For the below image, label the 13. polar area and 14. non- polar area on the diagram.
Draw in 15. protein channel and 16. molecules that would represent a potential concentration gradient in facilitated diffusion via a protein channel on the diagram.



Answer :

Facilitated diffusion refers to the movement of solutes across the plasma membrane by transport proteins. Transport proteins of three types aid diffusion: channel protein, gated channel protein, and carrier protein.

define plasma membrane ?

The cell membrane (also known as the plasma membrane (PM), cytoplasmic membrane, or plasmalemma) is a biological membrane that separates and protects the inside of all cells from the outside world (the extracellular space). The cell membrane is a lipid bilayer composed of two layers of phospholipids with cholesterols (a lipid component) interspersed between them, which maintains adequate membrane fluidity at different temperatures. Membranes also contain membrane proteins, which include integral proteins that span the membrane and act as membrane transporters, as well as peripheral proteins that loosely attach to the cell membrane's outer (peripheral) side and act as enzymes to facilitate interaction with the cell's environment. Glycolipids found in the outer lipid layer perform a similar function.

Transport proteins of three types aid diffusion: channel protein, gated channel protein, and carrier protein. A Channel Protein, a kind of transport protein, acts as a channel in the membrane, enabling water molecules or small ions to move through fast.

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