If you mean through the cells itself, that would be the endoplasmic reticulum but if you mean substances from the outside of the cell into the cell that is done by protein channels.
it's the cell membrane
it moves through aquaporins in the membrane.
endoplasmic reticulum
Yes, the cell membrane is selectively permeable, meaning it allows certain substances to pass through while blocking others. This is essential for controlling the movement of molecules in and out of the cell to maintain internal balance.
Alcohol moves across the cell membrane by means of osmosis.
Things can pass in and out through the cell.
Cell membrane
To let things through the cell membrane
Acids and chemicals
Water moves across a cell membrane through osmosis, which is the process of water molecules diffusing from an area of low solute concentration to an area of high solute concentration to maintain equilibrium. The cell membrane acts as a selective barrier, allowing water molecules to pass through while regulating the movement of other substances in and out of the cell.
When water moves across a cell membrane, it is called osmosis. Osmosis is the passive movement of water molecules from an area of higher concentration to an area of lower concentration through a selectively permeable membrane.
The membrane moves sidewaysit moves sideways