The Transport Of Gases By The Blood

Question 1

Oxygen

Answer 1

• about 1,5% is transported in solution in the blood plasma
• 98,5 % diffuses into the red blood cells and binds with haemoglobin
• four oxygen molecules can bind temporarily with haemoglobin to for oxyhemoglobin
• Hb + 4O2 —> Hb.4O2

Question 2

Carbon dioxide

Answer 2

• About 5% of carbon dioxide is transported in solution by the blood plasma
• 30% will bind with haemoglobin to form carbaminohaemoglobin
• Hb + CO2 —> Hb. CO2
• The rest, 65% dissolves in the plasma of the red blood cells to form bicarbonate ions