i) The plasma membrane separates the inside of a cell from the outside environment. It also controls the movement of various molecules in and out of the cell.
ii) If the plasma membrane ruptures then the osmotic balance of the cell is disturbed. This means that any molecule can leave or enter the cell which damages the balance of the constituents inside a cell.
iii) The protective wall between the outside and inside of a cell is destroyed and hence the integrity of the cell breaks down which causes the death of a cell.
