Which Phrase Describes the Selective Permeability of a Membrane

Question

Which phrase describes the selective permeability of a membrane?
A) the ability of only certain molecules to pass across a membrane
B) the ability of a molecule to pass through a membrane
C) the need for carrier proteins to transport certain molecules
D) the movement of a molecule from an area of greater concentration to an area of lesser concentration

Accepted Answer

Selective permeability refers to the property of a membrane that allows only certain molecules or ions to pass through it, while blocking others. This is essential for maintaining the internal environment of a cell or organelle.