Question

what do you think will happen to the cell if the plasma membrane does not function properly

Answer 1

1) selective transport of different materials will be affected
2) shape of the cell would be affected
3) cell may be dead due to attack of harmful microbes

Answer 2

In case plasma layer does not work regularly it allows abnormal development of substance all through the cell.

Lets take for instance the development of water of plasma film allows water to get in into the cell more than what is required it may cause the blasting of the cell or on the off chance that it allows water from the cell to get out and leaves the main solute inside this will cause contracting of the cell wherein the two conditions are abnormal.