if a liquid is unsaturated, this means that there is not as much possible solute in a solvent at a given temperature. one example is: a glass of water (solvent) with sugar (solute) in it at 70...
ok unsaturated means when..uhhmm..for eg. when you eat ice cream it taste really good soo that means its unsaturared..so it baseically means taste better. good luck in chemestry/science!
Unsaturation occurs in the middle of lipids. The tail ends are always saturated and as such hydrophobic - much better known as non-polar or non-charged, which is why they do not 'like' water.