First slide

Transport of Gases

Question

In the lungs, oxygen-haemoglobin dissociation curve shifts to the

Moderate

A

left, as decrease in pCO₂increases the H⁺ concentration
B

left, as decrease in pCO₂ decreases the H⁺ concentration
C

right, as decrease in pCO₂increases the H⁺ concentration
D

right, as decrease in pCO₂ decreases the H⁺ concentration

Solution

In the lungs, the diffusion of CO₂ from the blood into the alveoli reduces the blood pCO₂ and decreases the H⁺ concentration, shifting the oxygen-hemoglobin dissociation curve to the left.

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