# Sucrase is an enzyme that breaks sucrose down into glucose and fructose. What happen to the chemical bonds in sucrose when it binds to the enzyme sucrase?

The bonds between the glucose and fructose molecules making up the disaccharide sucrose break due to the enzyme sucrase, and water is added as $\text{H}$ and $\text{OH}$ to the two molecules. This is called a hydrolysis reaction.
Hydrolysis is a chemical reaction in which water (hydro) breaks (lysis) a chemical bond in a dimer (two molecules bonded) and polymer (many molecules bonded) by adding $\text{H}$ to one molecule and $\text{OH}$ to the other molecule.