20 Questions
What defines a parasite according to the text?
An organism that is dependent on another living organism for survival
Which sub-kingdom do protozoa belong to?
Protozoa
How are parasites classified in terms of the number of cells they have?
Unicellular and multicellular
Which group of parasitic organisms possess an external skeleton?
Nematodes
What is the definition of a definitive host?
The organism in which the adult or sexually mature stage of the parasite lives
Which type of parasites live within the body of the host?
Endoparasites
What is the estimated number of annual deaths due to malaria?
2.5 million
Which type of parasites possess an external skeleton?
Arthropoda
How do protozoa reproduce?
By fission, budding, or schizogony
What is the general size range of protozoa?
Between 3 um and 2000 mm
What is the characteristic feature of protozoa that allows their classification based on locomotion and reproduction?
Mode of reproduction
Which group of parasites do ticks and lice belong to based on the text?
Ectoparasites
What is the defining characteristic that separates definitive hosts from intermediate hosts?
Development stage of the parasite
Which disease has the highest estimated number of infected cases annually based on the provided data?
Ascariasis
Among the listed parasites, which one has the highest estimated annual death toll?
Schistosomiasis
What is the main difference between protozoa and metazoa based on the text?
Protozoa have a nuclear membrane while metazoa do not
What distinguishes arthropods from helminths based on the text?
Helminths are worms while arthropods have no distinct shape
In the context of parasites, why are protozoa and metazoa considered distinct groups?
Protozoa are unicellular while metazoa are multicellular
Which of the following statements accurately describes the classification of parasites?
Protozoa belong to the sub-kingdom metazoa
What is a distinguishing feature of helminths as compared to arthropods?
Helminths have an external skeleton while arthropods do not
Test your knowledge on parasites and parasitism in medical parasitology with this quiz based on the teachings of Hiba El Hajj, Ph.D., Associate Professor at the American University of Beirut. Explore topics such as malaria, different types of parasites, and their relationships with host organisms.
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