Permeability of small molecules through lipid membrane hydrophobic fre Ons H,O,urea glt ucose sucrose H, Na, K, HCO3, CL benzene glycerol C O, membrane glycerol HO urea n CL KTNa 10 10-10 Permeability(cm/sec)Permeability of small molecules through lipid membrane hydrophobic free-charge polar free-charge polar charged ions O2, N2 , H2O,urea, glucose sucrose H+ ,Na+ ,K+ , HCO3 - , CL￾benzene glycerol C O2,     _____ __________ _ membrane   glycerol glucose H2O urea tryptophen CL- K+ Na+ 10-2 10-4 10-6 10-8 10-10 10-12 Permeability (cm/sec)