Polarized.
polarized light
Polarized lenses
A permeable membrane
semi-permeable.
The cell membrane only allows certain molecules through.
It's a barrier that allows certain things to pass through it ie. water
A selectively permeable membrane.
Semi- Permeable
It allows only certain molecules to pass through.
The Plasma Membrane, which has a phospholipid bi-layer.
permiable
The cell membrane only allows certain molecules through.