Question

Which of the following helps in the transportation of gases?

• A. Haemoglobin
• B. Chlorophyll
• C. WBC
• D. None of the above

Answer 1

The correct option is A Haemoglobin

Hemoglobin (Hb or Hgb ) is an iron-containing protein present in Erythrocytes or Red blood cells(RBC) of almost all vertebrates. Each hemoglobin is made up of 4 subunits, 2 alpha subunits and 2 beta subunits. Each subunit surrounds the central heme group that contains iron and binds to one oxygen molecule. Hence each hemoglobin molecule can bind to four oxygen molecules. It carries oxygen from lungs to tissues. It also helps in the transportation of carbon dioxide, hydrogen ions back to the lungs from the tissues. Hence Haemoglobin helps in transportation of gases.

So, the correct answer is 'Haemoglobin'.