The diagram shows the effect of three different concentrations of carbon dioxide on the oxygen dissociation curve for human haemoglobin. Which effect does increasing carbon dioxide concentration have on haemoglobin?
A.
It makes haemoglobin less efficient at taking up oxygen and less efficient at releasing oxygen.
B.
It makes haemoglobin less efficient at taking up oxygen and more efficient at releasing oxygen.
C.
It makes haemoglobin more efficient at taking up oxygen and less efficient at releasing oxygen.
D.
It makes haemoglobin more efficient at taking up oxygen and more efficient at releasing oxygen.
Exam No：9700_s24_qp_13 Year：2024 Question No：31
Answer:
B
Knowledge points:
9.1.1.1 lungs
9.1.1.2 trachea
9.1.1.3 bronchi
9.1.1.4 bronchioles
9.1.1.5 alveoli
9.1.1.6 capillary network
9.1.2 describe the distribution in the gas exchange system of cartilage, ciliated epithelium, goblet cells, squamous epithelium of alveoli, smooth muscle and capillaries
9.1.3 recognise cartilage, ciliated epithelium, goblet cells, squamous epithelium of alveoli, smooth muscle and capillaries in microscope slides, photomicrographs and electron micrographs
9.1.4 recognise trachea, bronchi, bronchioles and alveoli in microscope slides, photomicrographs and electron micrographs and make plan diagrams of transverse sections of the walls of the trachea and bronchus
9.1.5 describe the functions of ciliated epithelial cells, goblet cells and mucous glands in maintaining the health of the gas exchange system
9.1.6 describe the functions in the gas exchange system of cartilage, smooth muscle, elastic fibres and squamous epithelium
9.1.7 describe gas exchange between air in the alveoli and blood in the capillaries
Solution:
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