Question

The metal essential for haemoglobin formation is

• A. $M{g}^{++}$
• B. $N{a}^{+}$
• C. $F{e}^{++}$
• D. $C{u}^{++}$.

Answer 1

The correct option is C $F{e}^{++}$

Hemoglobin (Hb or Hgb ) is an iron-containing protein present in erythrocytes or Red blood cells(RBC) of almost all vertebrates. Each hemoglobin is made up of 4 subunits, 2 alpha subunits and 2 beta subunits. Each subunit surrounds the central heme group that contains iron( Fe++)and binds to one oxygen molecule. Hence the metal essential for hemoglobin formation is Fe++.

So, the correct answer is 'Fe++'.