Question

Iron is attached to globin part of haemoglobin by

• A. Coordinate bond
• B. Ionic bond
• C. Covalent bond
• D. Hydrogen bond.

Answer 1

The correct option is B Ionic bond

Hemoglobin is an iron-containing oxygen-carrying pigment found in the blood of animals. It imparts a red color to the blood due to the iron present in it and transports oxygen to various tissues. It is made up of mainly two parts- iron and globin. In an oxygenated state, the iron atom is bound to the oxygen molecule via ionic attractions like dipole forces.

So, the correct answer is 'Ionic bond'.