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The mineral element in haemoglobin:
Topic: Iron in haemoglobin
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Answer
(b) Iron.
IRON is the metal at the centre of the HAEM group of haemoglobin, and it is the iron that actually binds the oxygen.
That is why a deficiency of iron causes ANAEMIA — too little haemoglobin, so the blood carries less oxygen, producing tiredness, pallor and breathlessness.
Keep the mineral functions apart, since they are asked as a set: IRON — haemoglobin CALCIUM — clotting of blood, and bones and teeth IODINE — thyroxine SODIUM and POTASSIUM — nerve impulse transmission Calcium is offered here because it is the other mineral strongly associated with blood — but with CLOTTING, not with oxygen transport.
Iron.