Question

Lipid bilayer is impermeable to -
a.hydrocarbons
b.hydrophobic molecules
c.small uncharged polar molecules
d.large uncharged polar molecules

Answer 1

The answer is hydrophobic molecules.

Answer 2

A pure artificial phospholipid bilayer is permeable to small hydrophobicmolecules and small uncharged polar molecules. It is slightly permeable to water and urea and impermeable to ions and to large uncharged polar molecules.