permeation through the plasma membrane perhaps?
Alcohol moves across the cell membrane by means of osmosis.
they pass through channels in the cell membrane
The cell membrane allows the movement of substances in and out of the cell while the cell wall just gives the plant cell its firm shape.
Osmosis is the movement of water across the cell membrane or the movement of water through diffusion. :)
passive transport
Cell membrane
osmosis
Membrane
active transport
Proteins
Active Transport
Passive transport does not use energy to pass through a cell membrane. active transport uses energy to pass through a cell membrane.