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
Role of selenocystein is impoant in ? 
Select and explain. 
A. Hydroxylation of dopamine, B. Oxidation of drugs, C. Antioxidant mechanism, D. None of the above
C: Antioxidant mechanism
Answer: C: Antioxidant mechanism 
Explanation: Ans. is 'c' i.e., Antioxidant mechanism