Above this line is the answer to the updated question. I've left the “old” below, maybe it'll have a use to someone. The lateral diffusion of phospholipids in a lipid bilayer is still related to the temperature, as stated below the line. But to ex... read more
Because the heads are polar molecules they (form hydrogen) bonds with water molecules found outside the cell and in the cytoplasm and they arrange on the outer layers (the outside of each side) of the cell membrane. read more