Multiple choice The 'fluid mosaic' model of cell membrane states that a lipid bilayer has proteins embedded in itself and none on the surface a lipid bilayer has some embedded proteins and some proteins on the surface a lipid bilayer is coated by a layer of proteins on each face a lipid bilayer is coated by a layer of proteins on the outer face only Reveal answer Fill a bubble to check yourself B Correct answer Explanation It states that a lipid bilayer has some embedded proteins and some proteins on the surface.