Discipline: Parasitology
Page
50
of
59
E) Clinical Parasitology (MCQs)
Answer
Key
837)
Which of the following classes of immunoglobulins is important in immunity to T. vaginalis?
A
A. IgA
B. IgG
C. IgE
D. IgM
838)
How long after conception does Tritrichomonas foetus cause abortions in cattle?
B
A. One week
B. 2-3 weeks
C. 2-3 months
D. 4-6 months
839)
Tritrichomonas foetus infections in cows usually self-heal within?
C
A. 2 weeks
B. 4 weeks
C. 2 months
D. 3 months
840)
The infection rate of Trichomonas vaginalis in European women is?
C
A. <0.1%
B. 1%
C. 1-5%
D. 5-20%
841)
Trichomonads are members of which phylum of protozoa?
A
A. Sarcomastigophora
B. Apicomplexa
C. Cilliophora
D. Microspora
842)
Trichomonas gallinae is transmitted by which of the following routes?
B
A. sexually
B. oral
C. aerosol
D. direct contact
843)
How long after infection with Trichomonas vaginalis do clinical symptoms begin?
D
A. <24 hours
B. 1-5 days
C. 5-10 days
D. 1-4 weeks
844)
The temperature for extension in PCR is variable and dependent on?
D
A. PCR product size
B. Genome size
C. Template size
D. None of these
845)
Which option is most appropriate if there are higher A-T contents in primers?
D
A. Primers are more specific
B. No effect on sensitivity and specificity of primers
C. Primers are less sensitive but more specific
D. Primers are more sensitive but less specific
846)
Which of the following statement is true regarding reverse primer?
C
A. It binds with antisense strand
B. It is complementary to antisense strand
C. It binds with sense strand
D. For its designing, the sequence from sense strand is
taken as such
847)
After addition of phenol-chloroform during DNA extraction, the DNA become separated in?
A
A. Supernatant
B. Sediment
C. Middle layer
D. Below Middle Layer
848)
During DNA replication, okazaki fragments are joined together by?
C
A. Primase
B. Helicase
C. DNA ligase
D. Topoisomerase
849)
The substance used to separate the proteins from the DNA?
A
A. Salt
B. Ethanol
C. Water
D. SDS solution
850)
The flask-shaped ulcers in the mucosa of the large intestine in humans are caused by
C
A. Cryptosporidium
B. Giardia
C. Entamoeba
D. Toxoplasma
851)
Chagas disease in humans is caused by
D
A. Trypanosoma brucei
B. Trypanosoma equiperdum
C. Trypanosoma evansi
D. Trypanosoma cruzi
852)
Which of the following protozoa are known as diplomonads
B
A. Cryptosporidium
B. Giardia
C. Entamoeba
D. Eimeria
853)
Nagana disease in cattle is caused by
A
A. Trypanosoma brucei
B. Trypanosoma cruzi
C. Tryapnosoma evansi
D. Trypansoma equiperdum
854)
The epimastigote form of Trypanosoma can be found in
C
A. Mid gut of vector
B. Hind gut of vector