Which element is called protein in haemoglobin?

Correct option is B

Correct Answer: (B) Globin
Explanation:
→ Haemoglobin is a complex protein found in red blood cells, composed of heme (iron-containing pigment) and globin (protein part).
→ Globin is the protein component of hemoglobin that binds to the heme groups.
→ The heme contains iron, which binds oxygen, while globin provides the structural framework for heme and facilitates oxygen transport.
→ Together, globin and heme enable hemoglobin to carry oxygen from lungs to tissues and transport carbon dioxide back to lungs.
Information Booster:
→ Hemoglobin = Globin (protein) + Heme (iron-containing pigment).
→ Globin is made up of four polypeptide chains (two alpha and two beta in adults).
→ Heme binds oxygen molecules, while globin ensures structural integrity.
→ Mutations in globin genes can lead to sickle cell anemia or thalassemia.
→ Globin provides solubility and proper folding to the heme group.
→ Hemoglobin facilitates oxygen delivery and carbon dioxide removal in the body.
→ Essential for cellular respiration and energy production.
Additional Information (Other Options):
Option (A) Haemoglobin – The whole molecule, not just the protein part.
Option (C) Lipoprotein – Complexes of lipids and proteins, unrelated to hemoglobin.
Option (D) Heme – Iron-containing pigment part of hemoglobin, not the protein.