Free radicals can be inactivated by following enzymes excepts:
**Core Concept**
The question is testing the knowledge of enzymes involved in the inactivation of free radicals, which are highly reactive molecules that can cause oxidative stress and damage to cells. Free radicals can be neutralized by enzymes that have antioxidant properties, such as superoxide dismutase, catalase, and glutathione peroxidase.
**Why the Correct Answer is Right**
Free radicals, such as superoxide anion (O2-) and hydrogen peroxide (H2O2), can be inactivated by the enzyme catalase. Catalase (EC 1.11.1.6) is a heme-containing enzyme that catalyzes the decomposition of hydrogen peroxide to water and oxygen. This reaction is crucial in protecting cells from oxidative damage caused by hydrogen peroxide. Additionally, superoxide dismutase (EC 1.15.1.1) and glutathione peroxidase (EC 1.11.1.9) are also enzymes that inactivate free radicals.
**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, please provide the options.
**Option B:** Not provided, please provide the options.
**Option C:** Not provided, please provide the options.
**Option D:** Not provided, please provide the options.
**Clinical Pearl / High-Yield Fact**
Free radicals play a crucial role in the pathogenesis of various diseases, including atherosclerosis, cancer, and neurodegenerative disorders. Antioxidant enzymes, such as catalase, superoxide dismutase, and glutathione peroxidase, are essential in maintaining cellular homeostasis and preventing oxidative damage.
**Correct Answer:** Not provided, please provide the options.