1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
What is true about RBCs in humans?
A
They carry about 20-25 percent of CO2.
B
They transport 99.5 percent of O2.
C
They transport about 80 percent oxygen only and the rest 20 percent of it is transported in dissolved state in blood plasma
D
They do not carry CO2 at all.
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
What is vital capacity of our lungs?
A
Inspiratory reserve volume plus expiratory reserve volume
B
Total lung capacity minus residual volume
C
Inspiratory reserve volum plus tidal volume
D
Total lung capacity minus expiratory reserve volume
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The haemoglobin of a human foetus
A
has only 2 protein subunits instead of 4
B
has a higher affinity for oxygen than that of an adult
C
has a lower affinity for oxygen than that of the adult
D
its affinity for oxygen is the same as that of an adult.
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at altitude to 5400 metres have around 8 million. This is because at high altitude
A
people eat more nutritive food, therefore more RBCs are formed
B
people get pollution-free air to breath and more oxygen is available
C
atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
D
there is more UV radiation which enhances RBC production.

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