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Microbiology
(Single Best Answer) Question 1: In which one of the following , typhoid bacilli can live longest ?
A) Ice cream
B) Soil irrigated with sewage
C) water
D) sweets
Answer (Select an option above to get the answer):
(Single Best Answer) Question 2: A cholera case differs from the case of food poisoning on the following points except ?
A) Incubation period in cholera is longer i.e. 2 to 5 days
B) Frequent effortless purging
C) Rice watery stools
D) Fever, fast pulse and head ache
Answer (Select an option above to get the answer):
(Single Best Answer) Question 3: Among the following, Angular conjunctivitis is caused by ?
A) Tubercule bacilli
B) Moraxella
C) Both
D) None
Answer (Select an option above to get the answer):
(Single Best Answer) Question 4: Which of the following is not true of gas gangrene ?
A) It is caused by Clostridium perfringens
B) Clostridium perfringens is a gram negative spore bearing bacillus
C) Gas gangrene is characterized by severe local pain, crepitus and signs of toxemia
D) High dose penicillin and aggressive debridement of affected tissue is the treatment of established infection
Answer (Select an option above to get the answer):
(Single Best Answer) Question 5: All of the following methods are used for the diagnosis of HIV infection in a 2 month old child, except ?
A) DNA-PCR
B) Viral culture
C) HIV ELISA
D) p24 antigen assay
Answer (Select an option above to get the answer):
(Single Best Answer) Question 6: A 24 year old male presents to a STD clinic with a single, painless ulcer on external genitalia. The choice of laboratory test to look for the etiological agent would be ?
A) Scrappings from ulcer for culture on chocholate agar with antibiotic supplement
B) Serology for detection of specific IgM antibodies
C) Scrappings from ulcer for dark field microscopy
D) Scarppings from ulcer for tissue culture
Answer (Select an option above to get the answer):
(Single Best Answer) Question 7: The following statements are true regarding botulism except ?
A) Infant botulism is caused by ingestion of preformed toxin
B) Clostridium botulinum A,B,C and F cause human disease
C) The gene for botulinum toxin is encoded by a bacteriophage
D) Clostridium baratti may cause botulism
Answer (Select an option above to get the answer):
(Single Best Answer) Question 8: The most common infectious agent associated with chronic pyelonephritis is ?
A) Proteus vulgaris
B) Klebsiella pneumoniae
C) Staphylococcus aureus
D) Escherichia coli
Answer (Select an option above to get the answer):
(Single Best Answer) Question 9: A adult male patient presented in the OPD with complaints of cough and fever for 3 months and haemoptysis off and on. His sputum was positive for AFB. On probing it was found that he had already received treatment with RHZE for 3 weeks from a nearby hospital and discontinued. How will you categorize and manage the patient ?
A) Category III, start 2 (RHZ)3
B) Category II, start 2 (RHZE)3
C) Category I, start 2 (RHZE)3
D) Category II, start 2 (RHZES)3
Answer (Select an option above to get the answer):
(Single Best Answer) Question 10: A 6-month old infant presents to the 'diarrhoea clinic' unit with some dehydration. The most likely organism causing diarrhoea is ?
A) Entamoeba histolytica
B) Rotavirus
C) Giardia lamblia
D) Shigella
Answer (Select an option above to get the answer):
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