Question

About 400 million haemoglobin molecules are destroyed in our body every
(a)Minute
(b)Second
(c)Hour
(d)Day

Answer 1

Haemoglobin is a pigment present inside the RBC of blood. It carried out the transportation of oxygen and carbon dioxide in the blood. The spleen destroys the old RBC as well as the haemoglobin molecules present in it.

Complete answer:
Haemoglobin is the pigment present in our red blood cell, which plays the main role in the transportation of gases through the blood. The normal quantity of haemoglobin of blood is 12gm/dl or higher in females and 13gm/dl or higher in males. Every second, approximately 400 million haemoglobin gets destroyed in our bodies.

Additional Information: In the human body, each red blood cell contains 270,000,000 numbers of haemoglobin molecules. We all know, haemoglobin is the most important molecule for the transportation of gases in our body. Oxygen and carbon dioxide bind with the haemoglobin temporarily and get transported to the cells and alveoli respectively.
As we know that spleen is the graveyard of RBC, the haemoglobin contained in it also gets destroyed there. Haemoglobin has two parts haem and globin. So, they break down into these two parts in the spleen. The haem gets further divided into iron and porphyrin. Whereas iron gets reutilized or stored, porphyrin gets converted into bile pigment bilirubin. The globin part gets hydrolyzed into amino acids. Thus about 400 million haemoglobin gets destroyed every second.

Note: A large number of haemoglobin molecules are contained inside every RBC. Every second in our body, the spleen destroys a huge number of old and damaged RBCs that contains an even greater number of haemoglobin molecules. There's no question that the spleen can destroy about 400 million haemoglobin molecules every second.