Final answer:
Catalase is a reusable enzyme that acts as a catalyst, converting hydrogen peroxide into water and oxygen without being consumed in the process, demonstrated by the catalase test in laboratories.
Step-by-step explanation:
Yes, catalase is a reusable enzyme. Catalase enzymatically converts highly reactive hydrogen peroxide (H₂O₂) into water and oxygen. As a catalyst, this enzyme increases the rate of the chemical reaction without being used or changed during the process, enabling it to be used repeatedly. The catalase test, a common laboratory technique, demonstrates this by identifying whether bacteria produce catalase by observing bubble formation when hydrogen peroxide is added to a bacterial culture. A positive result, seen as bubbling, implies that the bacteria can produce catalase and likely live aerobically, thereby detoxifying reactive oxygen species like hydrogen peroxide.