1.

How many carboxyl groups are present in fatty acids?(a) 1(b) 2(c) 3(d) 4

Answer» The correct answer is (a) 1

The explanation is: Fatty acids are long chain hydrocarbons containing only one carboxyl group at the end of the molecule. Three fatty acid chains link up via ester bonds to a glycerol molecule to form triacylglycerol. The hydrocarbon chain of fatty acids is hydrophobic and the carboxyl group is hydrophilic.


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