1.

What would have happened if Plasma membrane had not been selectively permeable?

Answer»

If PLASMA membrane had not been selectively permeable then any substance can enter the cell which can harm the balance between the cell content and outside ENVIRONMENT.

These molecules may INCLUDE TOXINS, and can harm the cell or kill it.

If the cell membrane is selectively permeable, it allows the entry to only a few SUBSTANCES barring all the others.



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