The monomers of organic compounds join together by a chemical reaction know as dehydration synthesis to make polymers. The reverse reaction of breaking up polymers is accomplished by another chemical reaction known as hydrolysis. The following animation's illustrate these reactions

Generalized Reaction of Dehydration Synthesis and Hydrolysis

Carbohydrate Metabolism

Dehydration Synthesis and Hydrolysis are Reversible

Glucose + Fructose Sucrose + H2O

Protein Metabolism

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