This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Peroxisomes contain (what class of - enzymes 
Select and explain. 
A. oxidative, B. superoxide anion, C. hydroxyl radical, D. hypochlorous acid
A: oxidative
Answer: A: oxidative 
Explanation: Peroxisomes contain enzymes- Oxidase and catalase. So H2O2 can be either synthesized (Oxidase) or metabolized (catalase) by peroxisomes.