Question

Why is the presence of an integral protein necessary for a charged particle, such as an ion, to cross a cell membrane?

Answer 1

Answer:

Explanation:

Integral membrane proteins are permanently embedded within the plasma membrane. They have a range of important functions. Such functions include channeling or transporting molecules across the membrane. Other integral proteins act as cell receptors

Integral membrane proteins reside within the bilayer membranes that surround cells and organelles, playing critical roles in movement of molecules across them and the transduction of energy and signal