Question

People who have migrated from the planes to an area adjoining Rohtang Pass about six months back :

• A. Have more RBCs and their haemoglobin has a lower binding affinity to $O_2$
• B. Are not physically fit to play games like football.
• C. Suffer from attitude sickness with symptoms like nausea, fatigue, etc.
• D. Have the usual RBC count but their haemoglobin has very high binding affinity to $O_2$

Answer 1

The correct option is A Have more RBCs and their haemoglobin has a lower binding affinity to $O_2$

Due to low atmospheric pressure at higher altitudes, the body does not get enough oxygen. Our body adapts by increasing the red blood cell production and by decreasing the binding affinity of hemoglobin.

Hence the correct option is A.