two distinct levels of peroxidase activity

例句：

1. 1. The peroxidase activity in the plant is essential for its survival.
   植物中的过氧化酶活性对其生存至关重要。
2. 2. The enzyme catalase is responsible for breaking down hydrogen peroxide into water and oxygen.
   这种酶——过氧化氢酶，负责将过氧化氢分解为水和氧气。
3. 3. Oxidase reactions are common in biological systems where oxygen is involved.
   在涉及氧气的生物系统中，氧化酶反应很常见。