This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Haldane effect is defined as: September 2010 
Select and explain. 
A. Impoant mechanism meant for oxygen transpo in the body, B. Binding of oxygen to hemoglobin increases capacity for carbon dioxide, C. Deoxygenation of blood increases capacity for carbon dioxide, D. All of the above
C: Deoxygenation of blood increases capacity for carbon dioxide
Answer: C: Deoxygenation of blood increases capacity for carbon dioxide 
Explanation: Ans. C: Deoxygenation of blood increases capacity for carbon dioxide The Haldane effect is a propey of hemoglobin first described by the Scottish physician John Scott Haldane. Deoxygenation of the blood increases its ability to carry carbon dioxide; this propey is the Haldane effect. Conversely, oxygenated blood has a reduced capacity for carbon dioxide.