Compare and contrast the carriage of oxygen and carbon dioxide in blood.
Candidates who scored well for this question not only had a good knowledge of the topic
but also displayed an organised approach to their answer through the use of a tabular
format or some other structured approach. For a good answer, candidates were expected to
provide information on the amount (both arterial and venous blood content, partial
pressure) and form of carriage (binding to, loading and unloading from haemoglobin,
dissolved, as bicarbonate, etc.) of oxygen and carbon dioxide in blood