EMBRYOLOGY
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which mineral is an essential part of hemoglobin and responsible for reversibly binding to oxygen?
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iron
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nitrogen
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oxygen
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calcium
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Explanation:
Detailed explanation-1: -The iron atom in the heme in hemoglobin is in the Fe(II) ferrous state to allow for reversible binding of iron with molecular oxygen, which completes the octahedral coordination of the central iron atom.
Detailed explanation-2: -During the breathing process, oxygen attaches loosely to the iron ion, and the oxyhaemoglobin thus formed surrenders its oxygen in the body and reverts back to haemoglobin. Outside the body the iron converts to the trivalent form.
Detailed explanation-3: -Vitamins B6, B9 and B12 all contribute to the production of hemoglobin, aprotein abundant in erythrocytes.
There is 1 question to complete.