Will only allow something of a certain size or with certain characteristics to pass through.
the cell membrane
diffusion
Selectively permeable refers to a cell membrane that will let certain things in and out of the cell, but block other things.
"Selectively permeable" refers to a membrane that allows certain substances to pass through while blocking others. This selectivity is based on the size, charge, or other properties of the molecules trying to cross the membrane. An example is a cell membrane, which permits the passage of specific molecules necessary for the cell's function while blocking others.
it is called osmosis and it is the net movement of water particles across a semi-permable membrane against the concentration gradient!
It means that is/can be a door to a cell 'hence semi permeable membrane? (or to anything)
Selectively permeable.
Here is an example:Rocks are permable because it won`t get wet.
process sink in take in soak
A substance just soft enough or porous enough for a liquid to filter through
very layered and covered in spots ussually, they are always permable and let bwate through
Osmosis is the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration across a selectively permeable membrane. It is important to note that osmosis is a passive process driven by the concentration gradient and does not require energy input from the cell.