Question

what happens if plasma membrane breakdown

Answer 1

hello friend your answer
it is very dangerous.
if the plasma membrane breakdown then cell will die because
It can't able to exchange the materials/food from its surrounding by diffusion/osmosis.
The protoplasmic material will be disappear.

Answer 2

If the plasma membrane breakdown then the cell will not be able to exchange material from its surrounding by the process of diffusion or osmosis.