Question

why is plasma membrane porous

Answer 1

The cell membrane is selectively permeable, meaning it only lets certain things in and out. The structure of the phospholipid bilayer prevents random things from drifting through the membrane, and proteins act like doors, letting the right stuff in and out.


please mark my answer as a brainliest

Answer 2

In short it must be selectively permeable. Pure lipid would be impermeable to most water-soluble substances so a plasma membranecontains channels and pores built from protein molecules to enable selected substances to enter (or leave) the cell.