What does it do?
The cell membrane is used as a cover to all of the parts that are inside the cell.
Its main purpose is to separate the interior from the exterior.
The basic function of the cell membrane is to protect the cell from its surroundings.
The membrane is able to regulate what enters and exits the cell itself.
The cell employs a number of transport mechanisms that involve biological membranes.
The movement of substances across the membrane can be either "passive", occurring without the input of cellular energy, or active, requiring the cell to expend energy in transporting it.
Why is it important?
it allows the cell to travel through the body with out getting infected.
blocks most illnesses for penetrating the cell.
it holds the inside parts of the cell together.
helps keep organization to the cells allowing them to function correctly.