What statement most accurately describes the structure of the plasma membrane?
A) Peripheral proteins span the membrane.
B) The plasma membrane is a phospholipid bilayer with the hydrophilic phosphate groups oriented toward the inside and outside of the cell.
C) The lipid portion of the bilayer is hydrophilic.
D) The plasma membrane is a phospholipid bilayer with the hydrophilic phosphate groups oriented toward one another.