All are true about a dehydration synthesis reaction except which of the following? a results in removal of a water molecule. b essential for the breakdown of complex molecules to simple ones. c essential to the formation of polymers. d essential for the formation of glycogen from glucose monomers.

Dehydration synthesis signifies towards the production of larger molecules from smaller ones, followed by the loss of a water molecule. Various reactions involving dehydration synthesis are related to the production of biological polymers where the supplementation of each monomer is followed by the eradication of one water molecule.

Thus, the statement b is false, that is, it is essential for the dissociation of composite molecules to simple ones.