Question

What is an integral membrane protein? What is its function?

Answer 1

Proteins which run along the whole phospholipids layer.

Explanation:

Integral proteins are the proteins of the cell membrane which are completely embedded in the bilayer of phospholipids and have hydrophilic and hydrophobic regions.
The region touching the hydrophobic tails are ought to be hydrophobic region where as the region of the protein exposed to the watery environment are the hydrophilic regions.

Carrier proteins and channel proteins are some of the integral proteins.

Their main function is to allow the polar and big molecules to pass across the membrane which are restricted by the phospholipid bilayer. They act as the gate for making the transportation either active or passive more easy.