A-LevelBiologyInfectious diseasesMay/June 2017Paper 2 Q39 Marks
Malaria is a disease caused by the protoctist, Plasmodium. The organism has a very complex life cycle as it has two hosts, a human and a mosquito. [Figure 3.1 is a transmission electron micrograph showing the developing Plasmodium cells inside a protective structure known as an oocyst. In this stage of the life cycle the oocysts are found in the mosquito gut. When mature, the Plasmodium cells are released and travel to the salivary glands of the mosquito. 20 μm]
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