Which statements about the formation of haemoglobinic acid are correct? 1 It can only occur with the dissociation of oxygen from haemoglobin. 2 It acts to prevent excess hydrogen ions causing acidity in blood. 3 It depends on the release of hydrogen ions by the action of carbonic anhydrase.
A.
1,2 and 3
B.
1 and 2 only
C.
2 and 3 only
D.
1 only
Exam No：9700_s16_qp_12 Year：2016 Question No：30
Answer:
A
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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