An increase in carbon dioxide in human blood shifts the oxyhaemoglobin dissociation curve to the right. What is the explanation for this effect?
A.
An increase in carbon dioxide concentration increases the breathing rate.
B.
Carbon dioxide is more soluble than oxygen and displaces it.
C.
Diffusion of carbon dioxide between the alveoli and the blood is more rapid.
D.
Increasing the \(\mathrm{H}^{+}\)concentration decreases haemoglobin affinity for oxygen.
Exam No：9700_w24_qp_11 Year：2024 Question No：31
Answer:
D
Knowledge points:
8.2.1.1 haemoglobin
8.2.1.2 carbonic anhydrase
8.2.1.3 the formation of haemoglobinic acid
8.2.1.4 the formation of carbaminohaemoglobin
8.2.2 describe the chloride shift and explain the importance of the chloride shift
8.2.3 describe the role of plasma in the transport of carbon dioxide
8.2.4 describe and explain the oxygen dissociation curve of adult haemoglobin
8.2.5 explain the importance of the oxygen dissociation curve at partial pressures of oxygen in the lungs and in respiring tissues
8.2.6 describe the Bohr shift and explain the importance of the Bohr shift
Solution:
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