Paper I
Question
Which of the following are antioxidants
- Catalase
- Myeloperoxidase
- Glutathione peroxidase
- Superoxide dismutase a) 1, 2, 3 b) 2, 3, 4 c) 3, 4, 1 d) 1, 2, 4
Answer
For general reference: common examples of biological antioxidants include vitamin E (alpha-tocopherol), vitamin C (ascorbic acid), vitamin A/beta-carotene, glutathione, and the enzymes superoxide dismutase, catalase, and glutathione peroxidase — these neutralize free radicals and reactive oxygen species, protecting cells from oxidative injury.