DMA's MICROBIOLOGY MCQ's PG Q&A SET - 2 09-DEC-17
Published on Dec. 9, 2017, 6:10 p.m.

Q.1)    A young male presented with urethral discharge. On urine examination pus cells were found but no
organisms. Which method is the best for culture:

a) LJ medium                                                                                                       
b) Mc coy cell line
c) Thayer martin medium
d) Levinthal medium

Q.2)    An infant had high grade fever and respiratory distress at the time of presentation of the emergency
room. The sample collected for blood culfure was subsequentlypositive showing gowth of alpha haemolyic colonies. On gram staining these were gram fve cocci. [n the screening test for identification, the suspected pathogen is likely to sensitive to:

a) Bacitracin                                                                                               
b .Novobiocin
c) Optochin
d) Oxacillin

Q.3)    AII are true regarding Hepatitis B except:
a) Age of onset determines the prognosis
b) Vertical transmission is more important than Horizontal                          
 c) Period of communicability lasts several months
d) Virus can be found in the blood 1 month before jaundice

Q.4)    Sputum is disinfected by all except:                                                
 a) Boiling
b) Autoclaving
c) Cresol
d) Chlorhexidine

Q.5)    Ocular dendritic cells express:                                                       
 a) MHc)I
b) MHc)II
c) Both MHC-I & MHC-II
d) Neither

Q.6)    Apatierrt presents with signs of pneumonia) The bacterium obtained from spufum was a gram positive cocii which showed alpha hemolysis on sheep agar. Which of the following test will help to confirm the diagnosis?                                                                                                                  
a) Bile solubility
b) Coagulase test
c) Bacitracin sensitivity
d) CAMP test

Q.7)    Which of the following statements about Pneumococcus is false: [
a) Capsule aids in virulence
b) Commonest cause of Otitis media
c) Causes mild forms of meningitis
d) Respiratory tract of camiers is most important source oF infection

Q.8)    An eight year old child with history of pain and discharge from right ear presents with fever, neck rigidity and a positive Kerrring's sign. Discharge was stained with gram stain which revealed gram positive cocci. Which of the following is the most likely organism.                                        
a) H. Influenzae
b) Staphylococcus
c) Pneumococcus
d) Pseudomonas

Q.9)    All of the following agents have polysaccharide capsule related antigen - antibody responses, except:  
 a) Pneumococcus                                                                                 
b .Meningococcus
c) Haemophillus Influenza
d) Bordetella Pertusis

Q.10)    'C' in 'C Reactive Protein' stands for:                                                       
a) Capsular Polysacharide in Pneumococcus
b)Concanavalin-a
c) Calretinin
d) Cellular

ANSWERS
Q.1) a
Q.2) b
Q.3) b
Q.4) c
Q.5) c
Q.6) b
Q.7) d
Q.8) b
Q.9) B
Q.10) d

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