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Bacteriology
(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: Humoral immunity is effective against which of the following ?
A) Mycobacterium leprae
B) Candida albicans
C) Mycobacterium tuberculosis
D) Clostridium tetani
Answer (Select an option above to get the answer):
(Single Best Answer) Question 4: 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 5: Tubercle bacilli was discovered by ?
A) Louis Pasteur
B) Thomas Kocher
C) John Snow
D) Robert Koch
Answer (Select an option above to get the answer):
(Single Best Answer) Question 6: All of the following statements are true about tubercle bacilli except ?
A) It grows well at 37ÂșC
B) It does not produce pigment
C) It was discovered by Thomas Kocher
D) It is gram positive
Answer (Select an option above to get the answer):
(Single Best Answer) Question 7: The pathogenic effects of Vibrio cholera are due to ?
A) Endotoxin
B) Exotoxin
C) Enterotoxin
D) Direct invasion
Answer (Select an option above to get the answer):
(Single Best Answer) Question 8: 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 9: The following phenomenon is responsible for antibiotic resistance in bacteria due to slime production ?
A) Co-aggregation
B) Biofilm formation
C) Mutation evolving an altered target site for antibiotics
D) Mutation evolving a target bypass mechanism
Answer (Select an option above to get the answer):
(Single Best Answer) Question 10: In the small intestine, cholera toxin acts by ?
A) ADP-ribosylation of the G regulatory protein
B) Inhibition of adenyl cyclase
C) Activation of GTPase
D) Active absorption of NaCl
Answer (Select an option above to get the answer):
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