Question

why is plasma membrane is porous?​

Answer 1

The plasma membrane is selectively permeable; hydrophobic molecules and small polar molecules can diffuse through the lipid layer, but ions and large polar molecules cannot. Integral membrane proteins enable ions and large polar molecules to pass through the membrane by passive or active transport

Answer 2

The plasma membrane is permeable ; hydrophobic molecules and small polar molecules can be diffuse through the lipid layer , but ions and large polar molecules cannot.Integral membrane proteins enable ions and large polar molecules to pass through the membranes by passive or active transport