Q24 / 200 · NEET 2022 (Phase 2) · Botany

In the enzyme which catalyses the breakdown of: $\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2$ the prosthetic group is :

  • A
    Nicotinamide adenine dinucleotide
  • Correct answer
    B
    Haem
  • C
    Zinc
  • D
    Niacin

Solution

The enzyme which catalyse the breakdown of $\mathrm{H}_2 \mathrm{O}_2$ as : $\mathrm{H}_2 \mathrm{O}_2 \longrightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2$ is called Catalase which have prosthetic group Haem. This enzyme is activated by iron. The breakdown occurs inside peroxisome during photorespiration.

Hence, the correct answer is option: 'B'.

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