KROK 1 2016 – Question 5 · KROK (Medicine) · Biological Chemistry
The process of metabolism in the human body produces active forms of oxygen, including superoxide anion radical O₂•⁻. This anion is inactivated by the following enzyme:
- A. Glutathione peroxidase
- B. Catalase
- C. Glutathione reductase
- D. Superoxide dismutase
- E. Peroxidase
Hint
Think about which antioxidant enzyme uses the superoxide radical itself as its substrate, as opposed to enzymes that handle its downstream product.
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