Generally, a fatty acid is composed of a carboxyl group and a R group.
Discussion;
The fatty acid is made up of a R-group and a Carboxyl group.
The carboxyl group is the acid-bearing portion of the fatty acid molecule.
However, the R group which may vary; determines the length of the fatty acid as this R group may be composed of long chain of carbon atoms or a short chain of carbon atoms.
This is the basis of classification of fatty acids as either Long chain or Short chain fatty acids.
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