Multiple choice Composition and structure of the cell membrane is Lipoproteinaceous & Bilaminar lipoproteinaceous and trilaminar lipoproteinaceous and tetralaminar phosphoproteinaceous and trilaminar Reveal answer Fill a bubble to check yourself B Correct answer Explanation Composition and structure of cell membrane is lipoproteinaceous and trilaminar. Trilaminar means that it is made of two layers of lipids and one of proteins.