Detailed Instructions: In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Q: Question: If, by adding a drop of H2O2 to a bacterial suspension, bubbles (O2) are generated, the bacteria produce:
Options: <0> Cytochrome C oxidase. <1> Oxygenase <2> Superoxide dismutase. <3> Catalase <4> Anhydrase
A:
biology