Those organisms which in the process of evolution failed to develop protection from H2O2 can exist only in anaerobic conditions. Which of the following enzymes can break hydrogen peroxide down?

Answer options

1. Cytochrome oxidase, cytochrome B5
2. Flavin-dependent oxidase
3. Oxygenase and hydroxylase
4. Oxygenase and catalase
5. Peroxidase and catalase

Explanation

"Peroxidase and catalase" is an enzyme that breaks down H2O2 (Hydrogen peroxide) to H2O and O2.