Blood and Tissue Flagellates Flashcards
What is the etiological agent of Chagas disease?
A) Plasmodium vivax
B) Trypanosoma brucei
C) Trypanosoma cruzi
D) Leishmania donovani
C) Trypanosoma cruzi
Which stage of Trypanosoma cruzi is typically found in human blood?
A) Epimastigote
B) Amastigote
C) Trypomastigote
D) Promastigote
C) Trypomastigote
Chagas disease is also known as:
A) African Sleeping Sickness
B) American Trypanosomiasis
C) Leishmaniasis
D) Malaria
B) American Trypanosomiasis
Which insect is the primary vector for the transmission of Trypanosoma cruzi?
A) Anopheles mosquito
B) Sandfly
C) Tsetse fly
D) Triatomine bug
D) Triatomine bug
What is the common name for the insect vector responsible for the transmission of Chagas disease?
A) Kissing Bug
B) Bed Bug
C) Flea
D) Louse
A) Kissing Bug
Which subspecies of Trypanosoma brucei is traditionally associated with East African Sleeping Sickness?
A) T. brucei gambiense
B) T. brucei rhodesiense
C) T. brucei brucei
D) T. cruzi
B) T. brucei rhodesiense
What is the main vector for the transmission of Trypanosoma brucei?
A) Anopheles mosquito
B) Tsetse fly
C) Sandfly
D) Triatomine bug
B) Tsetse fly
What is the genus name of the tsetse fly, the vector for African Sleeping Sickness?
A) Culex
B) Aedes
C) Glossina
D) Musca
C) Glossina
Which disease is caused by Trypanosoma brucei?
A) Chagas disease
B) Malaria
C) Leishmaniasis
D) African Sleeping Sickness
D) African Sleeping Sickness
Which subspecies of Trypanosoma brucei is most prevalent in West Africa?
A) T. brucei gambiense
B) T. brucei rhodesiense
C) T. brucei brucei
D) T. cruzi
A) T. brucei gambiense
Which Leishmania species is primarily associated with cutaneous leishmaniasis?
A) Leishmania donovani
B) Leishmania tropica
C) Leishmania braziliensis
D) Leishmania major
B) Leishmania tropica
Leishmania amastigotes are known to live intracellularly in:
A) Red blood cells
B) Epidermal cells
C) Monocytes and endothelial cells
D) Hepatocytes
C) Monocytes and endothelial cells
What is the common name for the disease caused by Leishmania donovani?
A) Chagas disease
B) African Sleeping Sickness
C) Visceral leishmaniasis or Kala-Azar
D) Malaria
C) Visceral leishmaniasis or Kala-Azar
Which of the following Leishmania species can cause mucocutaneous leishmaniasis?
A) Leishmania donovani
B) Leishmania major
C) Leishmania tropica
D) Leishmania braziliensis
D) Leishmania braziliensis
What is the insect vector for Leishmania spp.?
A) Anopheles mosquito
B) Tsetse fly
C) Sandfly (Phlebotomus spp.)
D) Triatomine bug
C) Sandfly (Phlebotomus spp.)
The Leishmania stage shown in the image, characterized by a single free flagellum, is known as:
A) Amastigote
B) Promastigote
C) Epimastigote
D) Trypomastigote
B) Promastigote
The flagellum of a Leishmania promastigote originates from which part of the cell?
A) Nucleus
B) Kinetoplast
C) Golgi apparatus
D) Mitochondrion
B) Kinetoplast
What is the significance of the Leishmania promastigote form?
A) It is the reproductive stage.
B) It is the infective stage to humans.
C) It is the stage that lives in the sandfly’s gut.
D) It is the stage that causes symptoms in humans.
B) It is the infective stage to humans.
In which host is the Leishmania promastigote form found?
A) In the mammalian host
B) In the insect vector
C) In the environment
D) In water sources
B) In the insect vector
The infective stage of Leishmania responsible for transmission to humans is:
A) Promastigote
B) Amastigote
C) Epimastigote
D) Trypomastigote
A) Promastigote
What is the definitive host of Toxoplasma gondii?
A) Canids (dogs)
B) Rodents (rats)
C) Felidae (cats)
D) Bovidae (cattle)
C) Felidae (cats)
Which form of Toxoplasma gondii is typically found in the definitive host?
A) Tachyzoites
B) Tissue cysts
C) Bradyzoites
D) Oocysts
D) Oocysts
Which stage of Toxoplasma gondii is most commonly associated with infection in intermediate hosts through ingestion?
A) Tachyzoites
B) Tissue cysts
C) Bradyzoites
D) Oocysts
B) Tissue cysts
Toxoplasma gondii : Tachyzoites are:
A) The slow-dividing form found in tissues
B) The rapid-dividing form seen during acute infection
C) The form that encysts in the brain and muscle tissues
D) The form excreted by the definitive host
B) The rapid-dividing form seen during acute infection
