Liposomes Form Spontaneously from ________ and Are Important Because ________

Liposomes form spontaneously from ________ and are important because ________.

A) DNA; they provide a rigid structure to support the cell
B) phospholipid monolayers; these phospholipid monolayers provide a stable barrier between the internal and external environments
C) rigid cell walls; they provide support for the living cell and a barrier between the external and internal environments
D) phospholipid bilayers; they provide a barrier between an external environment and an internal environment