Question

The correct statement in respect of protein haemoglobin is that it

• A. Functions as a catalyst for biological reactions.
• B. Maintains blood sugar level.
• C. Acts as an oxygen carrier in the blood.
• D. Forms antibodies and offers resistance to diseases.

Answer 1

The correct option is C Acts as an oxygen carrier in the blood.

Haemoglobin is the iron-containing oxygen-transport protein in the red blood cells of all vertebrates. Hemoglobin in the blood carries oxygen from the respiratory organs like lungs or gills to the rest of the body. There it releases the oxygen to permit aerobic respiration to provide energy to power the functions of the organism in the process called as metabolism.