Fatty acids-

Fatty acids are the derived lipids and are obtained by the hydrolysis of fats and other lipids. Naturally occurring fatty acids contain an even number of carbon atom because they are synthesized from 2 carbon units and are strainght cahin derivatives. The straight chain may be saturated or unsaturated and depending on this, fatty acids may be 1)saturated fatty acids 2) unsaturated fatty acids.
1) Saturated fatty acids- Straight chain saturated hydrocarbon belonging to acetic acid series, and have the general formula.
2) Unsaturated fatty acids- Fatty acids which have one or more double bonds in their molecules are called unsaturated fatty acids.