What reaction generates ROS from hydrogen peroxide?

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Multiple Choice

What reaction generates ROS from hydrogen peroxide?

Explanation:
Fenton chemistry shows how hydrogen peroxide becomes a highly reactive oxygen species. When ferrous iron (Fe2+) encounters hydrogen peroxide, it donates an electron to H2O2, producing ferric iron (Fe3+), a hydroxyl radical, and a hydroxide ion. The hydroxyl radical is extremely reactive and can damage lipids, proteins, and DNA. This reaction is the direct way H2O2 is converted into a ROS. The other options are metabolic pathways that don’t perform this specific conversion. The electron transport chain can generate ROS as byproducts, but not by a primary reaction that turns hydrogen peroxide into hydroxyl radicals in one step.

Fenton chemistry shows how hydrogen peroxide becomes a highly reactive oxygen species. When ferrous iron (Fe2+) encounters hydrogen peroxide, it donates an electron to H2O2, producing ferric iron (Fe3+), a hydroxyl radical, and a hydroxide ion. The hydroxyl radical is extremely reactive and can damage lipids, proteins, and DNA. This reaction is the direct way H2O2 is converted into a ROS. The other options are metabolic pathways that don’t perform this specific conversion. The electron transport chain can generate ROS as byproducts, but not by a primary reaction that turns hydrogen peroxide into hydroxyl radicals in one step.

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