Which structure consists of two lipid bilayers folded together as a single membrane?

A) cell wall
B) cell membrane
C) nuclear envelope
D) ribosome
E) Golgi body

The nuclear envelope consists of two lipid bilayers folded together as a single membrane. The outer membrane is continuous with the endoplasmic reticulum, while the inner membrane encloses the nucleus and contains nuclear pores for the transport of molecules in and out of the nucleus. The cell wall and cell membrane are both single lipid bilayers, while ribosomes and the Golgi body are not membrane-bound structures.