What would happen if the plasma membrane ruptures or breaks down?
The plasma membrane provides shape and support to the cell. It is a selectively permeable membrane and keeps a check on the movement of substances in and out of the cell by the process of diffusion or osmosis. Thus, if the plasma membrane is ruptured it cell contents will be in direct contact with the enviroment and movement of substances will no longer be selective. Free movement may lead to the death of the cell.