Question

Breakdown product of haemoglobin is called as
a. Iron
b. Bilirubin
c. Haemocyanin
d. Skatol

Answer 1

Hint: The haemoglobin (Hb) is a protein that provides red colour to blood. This pigment is found in the blood in red blood cells (RBCs). It helps in the transport of oxygen to all parts of the body.

Complete answer:
> Option A:
Iron is an element represented as (symbol) Fe. It is found in the haemoglobin molecule. One atom of iron connecting the porphyrin ring contains four pyrrole rings together to make tetramer molecules of haemoglobin.

> Option B:
Bilirubin is a product produced by the breakdown of haemoglobin (Hb). It is a yellow coloured compound whose excess is seen in the Jaundice. It is synthesized in the liver and spleen.

> Option C:
Haemocynin are proteins that help in the transport of oxygen in invertebrates like mollusks and arthropods. It contains two copper atoms in its structure.

> Option D:
Skatol is an organic compound found in the excreta or faces. It gives order or smell to faces. It is a member of the indole family and it is produced by the decomposition of tryptophan amino acid.

Hence, the correct answer is option (B), as the bilirubin is produced by the degradation of haemoglobin (Hb) in liver and spleen.

Note: Haemoglobin (Hb) is a metallo-protein that contains one atom of Fe (iron) at the center that connects the porphyrin ring containing four pyrrole molecules. It helps in the binding of four molecules of molecular oxygen (O2) to each molecule of haemoglobin. It gives bright red colour to the blood when it is oxygenated and when deoxygenated it gives dark red colour.