The Fluid Mosaic Model proposed by Singer and Nicolson in 1972 included that
A. the cell membrane was composed of lipids and proteins.
B. the cell membrane was composed of a phospholipid bilayer between two layers of globular proteins.
C. the cell membrane was composed of a phospholipid bilayer with globular proteins actually inserted into the bilayer.
D. the cell membrane was composed of a phospholipid bilayer but the polar ends of the phospholipid molecules were reversed.
Answer: C