question_answer 38)

  Haemozoin is (a) precursor of haemoglobin                                     (b) toxin from Streptococcus (c) toxin from Plasmodium species                          (d) toxin from Haemophilus species

Answer:

                  (c)Haemozoin is a toxin released by Plasmodium species, which is responsible for the chill and high fever recurring every three to four days. To continue their life-cycle, Plasmodium enters the human body as sporozoites and multiply within the liver cells, resulting in the rupture of the RBCs, The rupture RBCs is associated with release of a toxic substance, haemozoin, while Streptococcus produces streptomycin and streptococcal pyrogenic exotoxin which shows haemolytic and Haemophilus produces cytolethal distending toxin (HdCDT)which inhibit mammals cell proliferation.