The malarial patient feels chill and fever when:
Correct answer: A. merozoites increase their population in RBC and burst open the RBC
- A. merozoites increase their population in RBC and burst open the RBC
- B. sporozoites enter the bloodstream
- C. sporozoites enter the liver cells.
- D. merozoites come out of the liver cells.
Explanation
During the erythrocytic stage of the plasmodium life cycle, merozoites invade red blood cells and reproduce inside them. As the number of merozoites increases within the RBCs, the RBCs eventually burst open (lysis), releasing more merozoites into the bloodstream. This bursting of infected RBCs leads to the release of toxic substances and triggers an immune response, resulting in symptoms such as chills and fever.
This question appeared on the ETEA MDCAT 2010 paper, which you can sit online with every answer explained.
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About Kingdom Protista
Kingdom Protista contains mainly unicellular eukaryotes, although some forms are colonial or multicellular, with varied nutritional and reproductive methods. Questions examine protozoans, algae and examples such as Amoeba, Paramecium and Euglena, while distinguishing protists from prokaryotes, fungi and true plants.
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