False statement about haemoglobin structure________________?
Correct answer: A. Hb has 2 polypeptide chains
- A. Hb has 2 polypeptide chains
- B. Iron is present in ferrous state
- C. Hb structurally similar to myoglobin
- D. Ferrous ions are in porphyrin rings
Explanation
Adult haemoglobin has four polypeptide chains, not two, whereas myoglobin has one chain. Its haem iron is ferrous and lies within a porphyrin ring, so option a is the false statement.
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