Spirochacter and Enterobacteriaceac MCQs : This section focuses on the "Spirochacter and Enterobacteriaceac". These Multiple Choice Questions (MCQs) should be practiced to improve the Spirochacter and Enterobacteriaceac skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
The bacteria that is negative for fermentation of mannitol is
A. S flexneri
B. S boydiI
C. S dysenteriae
D. S sonnei
Question 2
Species of Shigella which is predominant in India is
A. S sonnei
B. S dysenteriae
C. S boydii
D. S flexneri
Question 3
Traveller's diarrhea is caused by
A. enteropathogenic Escherichia coli (EPEC)
B. entero invasive E. coli (EIEC)
C. entero toxigenic E. coli (ETEC)
D. entero haemorrhagic E. coli (EHEC)
Question 4
Which of the following bacteria is/are known as coliform bacilli?
A. Escherichia
B. Klebsiella
C. Enterobacter
D. All of the above
Question 5
The bacteria which produce(s) β-galactosidase is/are
A. Citrobacter
B. Enterohacter
C. Serratia
D. all of these
Question 6
Which of the following can readily kill Salmonellae?
A. Moist heat at 55°C for 20 min
B. Moist heat at 55°C for 10 min
C. Moist heat at 55°C for 30 min
D. Moist heat at 55°C for 1 hr
Question 7
Which of the following serotypes of Salmonella can cause gastroenteritis?
A. S enteritidis
B. S newport
C. S typhimurium
D. All of these
Question 8
Bipolar staining is characteristic of
A. Yersinia pestis
B. Proteus mirabilis
C. Pseudomonas aeruginosa
D. all of these
Question 9
The reaction(s) that is/are usually positive in Escherichia coli, is/ are
A. Glucose fermentation
B. Indole reaction
C. Methyl red reaction
D. All of the above
Question 10
Which of the following bacteria is/are known as coliform bacilli?
A. Escherichia
B. Klebsiella
C. Enterobacter
D. All of these
Question 11
Example of the pathogenic bacteria is/are
A. L biflexa
B. Lparva
C. Leptospira interrogans
D. All of these
Question 12
In Widal test the significant titres for H agglutinins is
A. 1:50 or more
B. 1:100 ormore
C. 1:200 or more
D. 1:400 or more
Question 13
Heat-labile enterotoxin of Escherichia coli activates
A. guanylate cyclase
B. adenylate cyclase
C. both (a) and (b)
D. none of these
Question 14
Transmission of pneumonic plague from man to man is through
A. inoculation
B. ingestion
C. droplet infection
D. all of these
Question 15
Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?
A. They are catalase-positive
B. They are oxidase-negative
C. They ferment glucose
D. They reduce nitrates to nitrites
Question 16
Enterobacter can be differentiated from Klebsiella by
A. ornithine positivity
B. motility
C. both (a) and (b)
D. none of these
Question 17
The media which serve(s) as enrichment media for Salmonella is/are
A. Tetrathionate broth
B. Brilliant green tetrathionate broth
C. Selenite-F broth
D. All of these
Question 18
Yersinia enterocolitica and Y. pestis can be differentiated on the basis of which of the following tests?
A. Decarboxylation of ornithine
B. Fermentation of sucrose and cellobiose
C. Motility at 22°C
D. All of these
Question 19
Sylvatic plague occurs in
A. mice
B. squirrels
C. chipmunks
D. All of the above
Question 20
Which of the following property(ies), shown by the organisms belong(s) to the family Enterobacteriaceae?
A. They are catalase-positive
B. They are oxidase-negative
C. They ferment glucose
D. All of these
Question 21
The agent(s) which can cause plague is/are
A. Yersinia pestis
B. Proteus mirabilis
C. Pseudomonas aeruginosa
D. All of the above
Question 22
Which of the following serotypes of Salmonella does not produce H2S?
A. S choleraesuis
B. S paratyphi A
C. Both (a) and (b)
D. None of these
Question 23
The reaction(s) that is/are usually positive in Escherichia coli, is/ are
A. Glucose fermentation
B. Indole reaction
C. Methyl red reaction
D. All of these
Question 24
Which of the following disease is caused by Yersinia enterocolitica in man?
A. Gastroenteritis
B. Mesenteric lymphadenitis
C. Septicaemia
D. All of these
Question 25
Sylvatic plague occurs in
A. mice
B. squirrels
C. chipmunks
D. all of these
Question 26
Verotoxin 1 of Escherichia coli is similar to
A. cholera toxin
B. shiga toxin
C. heat-stable enterotoxin of E. coli
D. heat-labile enterotoxin of E. coli
Question 27
Heat-labile enterotoxin of Escherichia coli activates
A. guanylate cyclase
B. adenylate cyclase
C. Both A and B
D. None of these
Question 28
Which of the following serotypes of Salmonella can cause gastroenteritis?
A. S enteritidis
B. S newport
C. S typhimurium
D. All of the above
Question 29
Heat-stable enterotoxin of Escherichia coli activates
A. adenylate cyclase
B. guanylate cyclase
C. Both A and B
D. None of these
Question 30
The most common cause of urinary tract infection in the community is
A. Klebsiella pneumoniae
B. Proteus vulgaris
C. Escherichia coli
D. Citrobacter freundii
Question 31
Spirochaetes exhibit
A. corkscrew-like rotatory movement
B. flexion and extension motility
C. translatory motion
D. all of the above
Question 32
Which of the following(s) bacteria belong to the family Entero-bacteriaceae?
A. Yersinia
B. Shigella
C. Salmonella
D. All of the above
Question 33
In Widal test, the significant titre for O agglutinins is generally
A. 1:50 or more
B. 1:100 or more
C. 1:150 or more
D. 1:2.00 or more
Question 34
Sereny test is used for the detection of
A. enteropathogenic Escherichia coli
B. enterotoxigenic E. coli
C. enteroinvasive E. coli
D. verotoxigenic E. coli
Question 35
Transmission of pneumonic plague from man to man is through
A. inoculation
B. ingestion
C. droplet infection
D. All of the above
Question 36
The technique(s), used for the assay of heat-labile enterotoxin produced by Escherichia coli, is/are
A. Steroid production in Yl mouse adrenal cell culture
B. Morphological changes in Chinese hamster ovary
C. Enzyme-linked immunosorbent assay
D. All of these
Question 37
Which of the following species/subspecies of Klebsiella produce indole?
A. K pneumoniae subspecies rhinoscleromatis
B. K pneumoniae subspecies aerogenes
C. K pneumoniae subspecies pneumoniae
D. K oxytoca
Question 38
The bacteria, which is more resistant to adverse environmental conditions, is
A. S sonnei
B. S dysenteriae
C. S flexneri
D. S boydii
Question 39
Prodigiosin (red pigment) is produced by members of genus
A. Hafnia
B. Enterobacter
C. Serratia
D. Cirobacter
Question 40
Transmission of bubonic plague is by
A. rat flea
B. inhalation
C. ingestion
D. All of the above
Question 41
The agent(s) which can cause plague is/are
A. Yersinia pestis
B. Proteus mirabilis
C. Pseudomonas aeruginosa
D. All of these
Question 42
Heat-stable enterotoxin of Escherichia coli activates
A. adenylate cyclase
B. guanylate cyclase
C. both of the above
D. none of these
Question 43
Dysentery may be caused by
A. enteropathogenic Escherichia coli
B. enteroinvasive E. coli
C. enterotoxigenic E. coli
D. verotoxigenic E. coli
Question 44
In Yersinia pestis, capsule is best demonstrated in cultures grown at
A. 25°C
B. 29°C
C. 37°C
D. 45°C
Question 45
Which of the following serotypes of Salmonella does not produce H2S?
A. S choleraesuis
B. S paratyphi A
C. Both A and B
D. None of these
Question 46
Which of the following determine the pathogenicity of Yersinia pestis?
A. V and W antigens
B. F1 envelope antigen
C. Production of pigmented colonies on haemin containing media
D. All of these
Question 47
Salmonellae can also be killed by
A. pasteurisation
B. chlorination
C. boiling
D. All of the above
Question 48
Salmonellae can also be killed by
A. pasteurisation
B. chlorination
C. boiling
D. all of these
Question 49
Transmission of bubonic plague is by
A. rat flea
B. inhalation
C. ingestion
D. all of these
Question 50
Which of the following is the commonest species of Salmonella for causing zoonotic disease?
A. S Indiana
B. S newport
C. S typhimurium
D. S enteritidis
Question 51
Xylose lysine deoxycholate (XLD) agar is better selective medium than the deoxycholate citrate agar (DCA) because
A. it is selective
B. it imparts better growth
C. it contains high salt concentration
D. it is less inhibitory to S. Dysentriae and S. flexneri
Question 52
Selective media for the isolation of Shigella is
A. Hektoen enteric agar
B. Salmonella-Shigella agar
C. Xylose lysine deoxycholate agar
D. All of these
Question 53
Which of the following genus belongs to family Spirochaetaceae?
A. Treponema
B. Spirochaeta
C. Borrelia
D. All of these
Question 54
Which of the following(s) bacteria belong to the family Entero-bacteriaceae?
A. Yersinia
B. Shigella
C. Salmonella
D. All of these
Question 55
An enrichment medium for the isolation of Shigella is
A. Alkaline peptone water
B. Terathionate broth
C. Selenite F broth
D. None of these
Question 56
Which of the following media is selective for Salmonella?
A. Thiosulphate citrate bile salt agar
B. Wilson and Blair's brilliant-green bismuth sulphite agar medium
C. Bile salt agar
D. All of the above
Question 57
Which of the following genus belongs to family Spirochaetaceae?
A. Treponema
B. Spirochaeta
C. Borrelia
D. All of the above
Question 58
Primarily human pathogenic bacteria is/are ,
A. Salmonella typhi
B. S paratyphi A
C. S paratyphi B
D. all of these