Question

What will happen if Plasma membrane breaks down?

Answer 1

 the cell couldn't exchange minerals through osmosis. The protoplasm is exposed to the external environment, ultimately leading to cell death.

Answer 2

If this happens,then:-
1.The cell will not be able to exchange material from its surrounding by diffusion or osmosis.
2.The activities inside the cell will be interrupted.
3.The protoplasmic material will disappear and the cell will eventually die.