Here's a breakdown:
* Permeable: Means that the cell membrane allows substances to pass through it.
* Impermeable: Means that the cell membrane does not allow substances to pass through it.
* Semipermeable: Means that the cell membrane allows some substances to pass through it but not others. This is the most common type of permeability in cells.
The specific substances that can pass through the cell membrane depend on the selective permeability of the membrane, which is determined by factors like the size, charge, and chemical properties of the substance.