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Termini in questo set (41)
Which of the following is an accidental parasite of humans?
A. Ascaris Lumbricoides
B. Acanthamoeba
C. Balantidium coli
D. Entamoeba histolytica
E. Plasmodium
A. Ascaris Lumbricoides
B. Acanthamoeba
C. Balantidium coli
D. Entamoeba histolytica
E. Plasmodium
B
Which of the following organisms can colonize the nasal cavity and enter the brain to cause meningoencephalitis?
A. Entamoeba histolytica
B. Acanthamoeba
C. Naegleria
D. Balantidium
E. Giardia
A. Entamoeba histolytica
B. Acanthamoeba
C. Naegleria
D. Balantidium
E. Giardia
C
Which of the following is a ciliated pathogen of the intestinal tract?
A. Balantidium
B. Plasmodium
C. Trypanosoma
D. Leishmania
E. Giardia
A. Balantidium
B. Plasmodium
C. Trypanosoma
D. Leishmania
E. Giardia
A
Once infected with Trypanosoma brucei, the patient's immune system cannot clear the infection and develop immunity because the parasite
A. has flagella that allow it to travel all over the body
B. matures into infectious trypomastigotes
C. reproduces by binary fission
D. changes its glycoprotein surface antigens every time it replicates
E. invades the central nervous system
A. has flagella that allow it to travel all over the body
B. matures into infectious trypomastigotes
C. reproduces by binary fission
D. changes its glycoprotein surface antigens every time it replicates
E. invades the central nervous system
D
Trypanosoma cruzi is introduced to the body by
A. feces containing trypomastigotes contaminating a bite wound
B. the bite of a tsetse fly, which introduces the trypomastigotes into the body
C. ingesting food contaminated with the parasite
D. the bite of a sand fly that has ingested phagocytes containing the parasite
E. wearing contact lenses cleaned with contaminated tap water
A. feces containing trypomastigotes contaminating a bite wound
B. the bite of a tsetse fly, which introduces the trypomastigotes into the body
C. ingesting food contaminated with the parasite
D. the bite of a sand fly that has ingested phagocytes containing the parasite
E. wearing contact lenses cleaned with contaminated tap water
A
The definitive host of a parasite is
A. the host for immature stages of the parasite
B. where the mature form of the parasite occurs
C. also the vector for the parasite
D. the host that the parasite name is based on
E. the host for the dormant stage of the parasite
A. the host for immature stages of the parasite
B. where the mature form of the parasite occurs
C. also the vector for the parasite
D. the host that the parasite name is based on
E. the host for the dormant stage of the parasite
B
Which of the following is the same for both Trypanosoma cruzi and Trypanosome brucei?
A. central nervous system infection
B. where the protozoan matures in the vector
C. type of arthropod vector
D. importance of early diagnosis and treatment
E. means of entry into the host
A. central nervous system infection
B. where the protozoan matures in the vector
C. type of arthropod vector
D. importance of early diagnosis and treatment
E. means of entry into the host
D
Which of the following is the most common parasitic disease in industrialized zones?
A. giardiasis
B. Trichomonas infection
C. schistosomiasis
D. toxoplasmosis
E. balantidiasis
A. giardiasis
B. Trichomonas infection
C. schistosomiasis
D. toxoplasmosis
E. balantidiasis
B
The presence of active motile multi-flagellated trophozoites in vaginal or urethral secretion is indicative of infection with
A. Trichomonas vaginalis
B. Chlamydia trachomatis
C. Giardia intestinalis
D. Aanthamoeba
E. Balantidium coli
A. Trichomonas vaginalis
B. Chlamydia trachomatis
C. Giardia intestinalis
D. Aanthamoeba
E. Balantidium coli
A
The protozoans knows as apicomplexans
A. are motile
B. reproduce by schizogony
C. are intracellular parasites
D. are motile intracellular parasites
E. reproduce by schizogony and are intracellular parasites
A. are motile
B. reproduce by schizogony
C. are intracellular parasites
D. are motile intracellular parasites
E. reproduce by schizogony and are intracellular parasites
E
Severe frothy diarrhea with a "rotten egg" smell accompanied by abdominal pain, bloating, and fever are signs and symptoms consistent with
A. balantidiasis
B. Chagas' disease
C. cryptosporidiosis
D. giardiasis
E. leishmaniasis
A. balantidiasis
B. Chagas' disease
C. cryptosporidiosis
D. giardiasis
E. leishmaniasis
D
Which of the following species of Plasmodium causes cerebral malaria?
A. only P. falciparum
B. P. ovale and P malariae
C. P. ovale and P. vivax
D. P. vivax and P. malariae
E. P. vivax, P. malariae, and P. ovale
A. only P. falciparum
B. P. ovale and P malariae
C. P. ovale and P. vivax
D. P. vivax and P. malariae
E. P. vivax, P. malariae, and P. ovale
A
Which of the following parasitic infections can be diagnosed using a blood smear?
A. African sleeping sickness
B. toxoplasmosis
C. malaria
D. African sleeping sickness and malaria
E. toxoplasmosis and malaria
A. African sleeping sickness
B. toxoplasmosis
C. malaria
D. African sleeping sickness and malaria
E. toxoplasmosis and malaria
D
The _______ spreads more parasitic diseases to humans than any other vector.
A. kissing bug
B. mosquito
C. tick
D. louse
E. mite
A. kissing bug
B. mosquito
C. tick
D. louse
E. mite
B
Which of the following statements concerning infection with Toxoplasma is FALSE?
A. it is one of the world's most widely distributed protozoan parasites in humans
B. it is typically contracted by eating undercooked meat
C. even though it can be transmitted across the placenta, it is harmless to the fetus
D. the majority of infected people are asymptomatic
E. it usually results in no permanent damage and is self-limiting
A. it is one of the world's most widely distributed protozoan parasites in humans
B. it is typically contracted by eating undercooked meat
C. even though it can be transmitted across the placenta, it is harmless to the fetus
D. the majority of infected people are asymptomatic
E. it usually results in no permanent damage and is self-limiting
C