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Mcqs MBBS Exams India
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(Single Best Answer) Question 21: Which of the following is the most predominant constituent of sulfur granules of actinomycosis ?
A) Organisms
B) Neutrophils and monocytes
C) Monocytes and lymphocytes
D) Eosinophils
Answer (Select an option above to get the answer):
(Single Best Answer) Question 22: Hepatitic C virus is a ?
A) Toga virus
B) Flavi virus
C) Filo virus
D) Retro virus
Answer (Select an option above to get the answer):
(Single Best Answer) Question 23: The following are characteristic features of staphylococcal food poisoning, except ?
A) Optimum temperature for toxin formation is 37 degree C
B) Intradietetic toxins are responsible for intestinal symptoms
C) Toxins can be destroyed by boiling for 30 minutes
D) Incubation period is 1 - 6 hours
Answer (Select an option above to get the answer):
(Single Best Answer) Question 24: Which of the following is the mode of transmission of Q fever ?
A) Bite of infected louse
B) Bite of infected tick
C) Inhalation of aerosol
D) Bite of infected mite
Answer (Select an option above to get the answer):
(Single Best Answer) Question 25: The incubation period for yellow fever is ?
A) 3 - 6 days
B) 1 - 2 days
C) 3 - 4 weeks
D) 8 - 10 weeks
Answer (Select an option above to get the answer):
(Single Best Answer) Question 26: All of the following statements about plague are wrong, except ?
A) Domestic rat is the main reservoir
B) Bubonic is the most common variety
C) The causative bacillus can survive up to 10 years in the soil of rodent burrows
D) The incubation period for pneumonic plague is one to two weeks
Answer (Select an option above to get the answer):
(Single Best Answer) Question 27: The protection against small pox by previous infection with cow pox represents ?
A) Antigenic cross-reactivity
B) Antigenic specificity
C) Passive immunity
D) Innate immunity
Answer (Select an option above to get the answer):
(Single Best Answer) Question 28: Which of the following lymphomas is associated with HTLV-I virus infection ?
A) Burkitt's lymphoma
B) B-cell lymphoma
C) Adult T-cell leukemia and lymphoma
D) Hodgkin's disease
Answer (Select an option above to get the answer):
(Single Best Answer) Question 29: In reference to Mycoplasmas, the following are true except ?
A) They are inhibited by penicillins
B) They can reproduce in cell free media
C) They have an affinity for mammalian cell membranes
D) They can pass through filters of 450 nm pore size
Answer (Select an option above to get the answer):
(Single Best Answer) Question 30: A 30 year old patient presented with features of acute meningoencephalitis in the casualty. His CSF on wet mount microscopy revealed motile unicellular micro-organisms. The most likely organism is ?
A) Naegleria fowleri
B) Acanthamoeba casteuani
C) Entamoeba histolytica
D) Trypanosoma cruzi
Answer (Select an option above to get the answer):