What if the following is a chemical reaction a. breaking a glass pane b. freezing water c. digestion of food d. cutting down a tree e. evaporation of rubbing alcohol

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer