HARDMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryBiomoleculesAchiever Section

The pair in which both species have iron is

A.Nitrogenase, cytochromes

B.Carboxypeptidase, Haemoglobin

C.Haemocyanin, nitrogenise

D.Haemoglobin, cytochromes✓ Correct

Explanation

Haemoglobin is found in blood and it consists of heme and globin chains. Heme contains iron in 2+ Fe oxidation state and the heterocyclic ring which is called Porphyrin.Cytochromes also contain iron.

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