Summary Table
| Property | Waxes | Phospholipids |
| Structure | Long-chain mixtures | Glycerol + 2 fatty acids + phosphate + nitrogen base |
| Water reaction | Hydrophobic | Head is hydrophilic, tail is hydrophobic |
| Function | Waterproofing, protection | Build cell membranes |
| Examples | Fruit coating, candle wax | Lecithin, cell membrane components |
| Uses | Polishes, crayons, candles | Plasma membranes in all living cells |