A) Vitamin \[{{B}_{12}}\]
B) Chlorophyll
C) Haemoglobin
D) Insulin
Correct Answer: B
Solution :
Biomolecule | Metal ion |
Vitamin \[{{B}_{12}}\] | Co (transition metal) |
Chlorophyll | Mg (non-transition metal ion) |
Haemoglobin | Fe (transition metal) |
Insulin | S (non-metal) |
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