Free radical creation in neutrophils – MCQ

All of the following enzymes may contribute in generating free oxygen radicals within neutrophils for killing intracellular bacteria except?
A. Superoxide dismutase
B. Fenton’s reaction
C. NADPH oxidase
D. Glutathione peroxidase

Correct answer : D. Glutathione peroxidase

Glutathione peroxidase is a free radical scavenger which converts H₂O₂ to H₂O and O_2.It does not generate free radicals.
Superoxide dismutase converts superoxide (O₂^–) to H₂O₂. Hence it is involved in both free radical scavenging and creation.

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