Question

Why does the Haldane effect play a more important role in promoting carbon dioxide transport than the Bohr's effect in promoting oxygen transport?

a) Oxyhaemoglobin is a stronger acid, donating hydrogen ions that displace carbon dioxide.
b) Carbaminohaemoglobin is a stronger acid, leading to the release of hydrogen ions and bicarbonate.
c) Carbon dioxide reacts with oxygen, forming an acid that lowers tissue pH.
d) Carbon dioxide is less soluble in venous blood than in arterial blood.

Answer 1

The Haldane effect plays a more important role in promoting carbon dioxide transport than the Bohr's effect in promoting oxygen transport due to several reasons such as the stronger acidity of oxyhaemoglobin, the higher solubility of carbon dioxide in arterial blood, and the release of hydrogen ions and bicarbonate in carbaminohaemoglobin.

Step-by-step explanation:

The Haldane effect plays a more important role in promoting carbon dioxide transport than the Bohr's effect in promoting oxygen transport because of several factors:

1. Oxyhaemoglobin is a stronger acid, donating hydrogen ions that displace carbon dioxide. When oxygen is bound to hemoglobin, it reduces the affinity for carbon dioxide. Hence, in oxygenated blood, carbon dioxide is more readily released.
2. Carbon dioxide is less soluble in venous blood than in arterial blood. Therefore, carbon dioxide has a greater tendency to bind to hemoglobin in venous blood, promoting its transport.
3. Carbaminohaemoglobin is a stronger acid, leading to the release of hydrogen ions and bicarbonate. This acid release helps in the transportation of carbon dioxide.