Multiple choice

_______ is a cofactorin enzymes, it is important in evolving O2 during photosynthesis

  1. Mn

  2. Cu

  3. Zn

  4. Mo
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Manganese (Mn) is an essential cofactor in the oxygen-evolving complex (OEC) of photosystem II. The OEC contains a Mn4CaO5 cluster that catalyzes the water-splitting reaction during photosynthesis, releasing oxygen as a byproduct. This cluster cycles through different oxidation states (S0-S4) to extract electrons from water molecules, making Mn indispensable for oxygen evolution.

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