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Glutathione peroxidase, catalase, and superoxide dismutase are all enzymes that have a role inAnswers: A. amino acid oxidationB. pentose phosphate pathwayC. TCA cycleD. metabolism of reactive oxygen species

Question

Glutathione peroxidase, catalase, and superoxide dismutase are all enzymes that have a role inAnswers: A. amino acid oxidationB. pentose phosphate pathwayC. TCA cycleD. metabolism of reactive oxygen species

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Solution

The correct answer is D. metabolism of reactive oxygen species.

Glutathione peroxidase, catalase, and superoxide dismutase are all enzymes that play a crucial role in protecting the cell from oxidative damage by metabolizing reactive oxygen species.

Here's a brief explanation of their roles:

  1. Glutathione peroxidase: This enzyme helps to detoxify hydrogen peroxide (a reactive oxygen species) in our bodies by converting it into water.

  2. Catalase: This enzyme also helps to convert hydrogen peroxide, a harmful by-product of many normal metabolic processes, into water and oxygen, thus preventing oxidative damage to cells.

  3. Superoxide dismutase: This enzyme helps to convert superoxide (another reactive oxygen species) into either ordinary molecular oxygen (O2) or hydrogen peroxide.

So, these enzymes are not directly involved in amino acid oxidation, the pentose phosphate pathway, or the TCA cycle. Instead, they help to manage and mitigate the potentially damaging effects of reactive oxygen species produced during various metabolic processes.

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