Question

What is true about haemoglobin?

• A. None of the above
• B. It contains a carbohydrate part called globin.
• C. It contains four pyrrole rings attached to iron element at the centre.
• D. It contains six pyrrole rings attached to iron element at the centre.

Answer 1

The correct option is C

It contains four pyrrole rings attached to iron element at the centre.

Haemoglobin is formed of four iron-containing porphyrin prosthetic groups attached to a globin protein. Each porphyrin molecule is formed at four pyrrole rings attached to iron element at the centre.