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: Biochemistry
H202 is breaked or formed by which of the following enzyme: 
Select and explain. 
A. Oxidase, B. Oxygenase, C. Hydrolase, D. All
A: Oxidase
Answer: A: Oxidase 
Explanation: A i.e. OxidaseOxidase & superoxide dismutase generate H202, where as catalase and peroxidase are associated with breakdown of 11202Q.