Which of the following is NOT true of phospholipid bilayers?
a. Membrane budding requires transient breakages in the bilayer membrane.
b. The interior of phospholipid bilayers is a highly hydrophobic environment.
c. The chemical properties of phospholipids lead to the spontaneous formation of bilayers.
d. Phospholipid bilayers separate the cell from the exterior environment as well as from compartments within the cell.