Which of the following elements is part of heme (haem) of human blood?

Option 1 : Iron

The correct answer is Iron.

•  Hemoglobin is a molecule inside the red blood cells of human blood.
  • It has two parts: the Heme and the Globin. 
•  The heme contains iron and transports oxygen from the lungs to the tissues as well as takes carbon dioxide from the tissues to the lungs.

• The oxygen carried by hemeproteins such as haemoglobin and myoglobin is bound directly to the ferrous iron (Fe2+) atom of the heme prosthetic group.
• Oxidation of the iron to the ferric (Fe3+) state renders the molecule incapable of normal oxygen binding.
• Haemoglobin is a molecule inside the red blood cells of human blood.
• It has two parts: the heme and the globin
• The heme contains iron and transports oxygen from the lungs to the tissues as well as takes carbon dioxide from the tissues to the lungs.
• The most common types of normal hemoglobin are:
  • Hemoglobin A - This is the most common type of hemoglobin found normally in adults. 
  • Hemoglobin F (fetal hemoglobin) -  This type is normally found in fetuses and newborn babies. 
  • Hemoglobin A2 -  This is a normal type of hemoglobin found in small amounts in adults.