Question
Which ofthe following unsaturated fatty acid possess four double bond?
Arachidonic acid
Linolenic acid
Oleic acid
Linoleic acid
Solution
A.
Arachidonic acid
Unsaturated acids possess one or more double bonds in their carbon chains. The general formula is CnH2n- 2xO2
Oleic acid = One double bond
Linoleric acid = Two double bonds
Linolenic acid = Three double bonds
Arachidonic acid = Four double bonds