Question: what are the three function of hemoglobin?
Answer: Hemoglobin. Hemoglobin is contained in red blood cells, which efficiently carries oxygen from the lungs to the tissues of the body. Hemoglobin also helps in the transportation of carbon dioxide and hydrogen ions back to the lungs. Hemoglobin or Haemoglobin is able to bind to gaseous nitric oxide (NO) as well as O2.