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
Which of the following is not a chain-breaking antioxidant? 
Select and explain. 
A. Superoxide Dismutase, B. Uric Acid, C. Catalase, D. Vitamin E
C: Catalase
Answer: C: Catalase 
Explanation: FREE RADICAL SCAVENGING SYSTEM
Antioxidants fall into two classes:

Preventive antioxidants, which reduced the rate of chain initiation.
	
They are Glutathione Peroxidase, Catalase.


Chain-breaking antioxidants, which interfere with chain propagation.
	
They are Superoxide Dismutase, Uric Acid, Vitamin E.



Reference- Review of biochemistry Rebecca James Perumcheril Pg-412