Question

Discuss briefly giving an example in each case the role of coordination compound in biological system.

Answer 1

1. Chlorophyll which is a green coloured pigment, that plays an important role in photosynthesis is a complex of magnesium. In chlorophyll, the Mg is coordinated to porphyrin ring.
2. Hemoglobin which is a iron(+2) complex carries oxygen to different parts of our body.
3. A complex of cobalt metal i.e, $B_{12}$ Vitamin, is involved in the metabolism of every cell in our body.