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CAIE A-Level Biology 8.2 Oxygen and Carbon Dioxide Question Bank

Practise gas-transport questions by following haemoglobin saturation, carbon-dioxide conversion, chloride shift and Bohr-shift changes on dissociation curves.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • explain oxygen loading and unloading from haemoglobin using partial pressures and affinity
  • sequence carbon dioxide transport as carbonic acid, hydrogencarbonate and chloride shift
  • interpret oxygen dissociation curves and Bohr shifts using graph values and pCO2 changes

Covered syllabus points

8.2.1—Red blood cell roles in O2 and CO2 transport8.2.2—Chloride shift and its importance8.2.3—Plasma role in CO2 transport8.2.4—Oxygen dissociation curve8.2.5—Partial pressures and oxygen loading8.2.6—Bohr shift and its importance

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