9.27     Discuss briefly giving an example in each case the role of coordination compounds in:

                (i) biological systems

Answers (1)

Coordination compounds play a great role in biological systems. The pigment which is responsible for photosynthesis, chlorophyll, is a coordination compound of magnesium. Haemoglobin (which acts as oxygen carrier) the red pigment of blood is a coordination compound of iron. Vitamin B12, cyanocobalamine, the anti-pernicious anaemia factor, are few coordination compounds of cobalt which have biological importance. 

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