osmosis - lipids, membranes and the first cells

atom bilayer biology cells chemical chemistry circle clean concentration desalination design diagram difference diffusion direction dirty document drawing education element equalize experiment filter filtration gadget glass health isolated label lighting line lipid lipids liquid medical medicine membrane membranes molecule molecules movement object osmosis osmotic pattern physics presentation pressure process purification reverse science selectively semi semipermeable sides solute solution solvent structure study sugar technology text two waste water