Final answer:
The splitting of sucrose into glucose and fructose by sucrase represents a catabolic reaction called hydrolysis, which involves the use of water to break down complex molecules.
Step-by-step explanation:
Sucrose is split into glucose and fructose by the enzyme sucrase. This would be an example of a catabolic reaction known as hydrolysis. In this reaction, a water molecule is used to break the glycosidic bond in sucrose, resulting in the formation of two monosaccharides: glucose and fructose. Enzymes like sucrase facilitate these types of biochemical reactions by lowering the activation energy required for the process, thus increasing the reaction rate.