What are the parts of cell membrane and their function?
cell Membranes are composed of phospholipids, proteins and carbohydrates arranged in a fluid mosaic structure, The phospholipids form a thin, flexible sheet, while the proteins “float” in the phospholipid sheet like icebergs, and the carbohydrates extend out from the proteins. The phospholipids are arranged in a bilayer, with their polar, hydrophilic phosphate heads facing outwards, and their non-polar, hydrophobic fatty acid tails facing each other in the middle of the bilayer. This hydrophobic layer acts as a barrier to all but the smallest molecules, effectively isolating the two sides of the membrane. Different kinds of membranes can contain phospholipids with different fatty acids, affecting the strength and flexibility of the membrane, and animal cell membranes also contain cholesterol linking the fatty acids together and so stabilising and strengthening the membrane. The proteins usually span from one side of the phospholipid bilayer to the other (integral proteins), but can als
