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Spirochacter and Enterobacteriaceac MCQ Questions & Answers

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

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Question 2

Species of Shigella which is predominant in India is

A. S sonnei
B. S dysenteriae
C. S boydii
D. S flexneri

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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)

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Question 4

Which of the following bacteria is/are known as coliform bacilli?

A. Escherichia
B. Klebsiella
C. Enterobacter
D. All of the above

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Question 5

The bacteria which produce(s) β-galactosidase is/are

A. Citrobacter
B. Enterohacter
C. Serratia
D. all of these

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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

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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

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Question 8

Bipolar staining is characteristic of

A. Yersinia pestis
B. Proteus mirabilis
C. Pseudomonas aeruginosa
D. all of these

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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

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Question 10

Which of the following bacteria is/are known as coliform bacilli?

A. Escherichia
B. Klebsiella
C. Enterobacter
D. All of these

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Question 11

Example of the pathogenic bacteria is/are

A. L biflexa
B. Lparva
C. Leptospira interrogans
D. All of these

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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

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Question 13

Heat-labile enterotoxin of Escherichia coli activates

A. guanylate cyclase
B. adenylate cyclase
C. both (a) and (b)
D. none of these

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Question 14

Transmission of pneumonic plague from man to man is through

A. inoculation
B. ingestion
C. droplet infection
D. all of these

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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

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Question 16

Enterobacter can be differentiated from Klebsiella by

A. ornithine positivity
B. motility
C. both (a) and (b)
D. none of these

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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

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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

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Question 19

Sylvatic plague occurs in

A. mice
B. squirrels
C. chipmunks
D. All of the above

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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

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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

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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

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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

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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

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Question 25

Sylvatic plague occurs in

A. mice
B. squirrels
C. chipmunks
D. all of these

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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

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Question 27

Heat-labile enterotoxin of Escherichia coli activates

A. guanylate cyclase
B. adenylate cyclase
C. Both A and B
D. None of these

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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

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Question 29

Heat-stable enterotoxin of Escherichia coli activates

A. adenylate cyclase
B. guanylate cyclase
C. Both A and B
D. None of these

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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

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Question 31

Spirochaetes exhibit

A. corkscrew-like rotatory movement
B. flexion and extension motility
C. translatory motion
D. all of the above

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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

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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

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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

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Question 35

Transmission of pneumonic plague from man to man is through

A. inoculation
B. ingestion
C. droplet infection
D. All of the above

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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

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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

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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

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Question 39

Prodigiosin (red pigment) is produced by members of genus

A. Hafnia
B. Enterobacter
C. Serratia
D. Cirobacter

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Question 40

Transmission of bubonic plague is by

A. rat flea
B. inhalation
C. ingestion
D. All of the above

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Question 41

The agent(s) which can cause plague is/are

A. Yersinia pestis
B. Proteus mirabilis
C. Pseudomonas aeruginosa
D. All of these

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Question 42

Heat-stable enterotoxin of Escherichia coli activates

A. adenylate cyclase
B. guanylate cyclase
C. both of the above
D. none of these

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Question 43

Dysentery may be caused by

A. enteropathogenic Escherichia coli
B. enteroinvasive E. coli
C. enterotoxigenic E. coli
D. verotoxigenic E. coli

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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

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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

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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

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Question 47

Salmonellae can also be killed by

A. pasteurisation
B. chlorination
C. boiling
D. All of the above

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Question 48

Salmonellae can also be killed by

A. pasteurisation
B. chlorination
C. boiling
D. all of these

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Question 49

Transmission of bubonic plague is by

A. rat flea
B. inhalation
C. ingestion
D. all of these

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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

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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

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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

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Question 53

Which of the following genus belongs to family Spirochaetaceae?

A. Treponema
B. Spirochaeta
C. Borrelia
D. All of these

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Question 54

Which of the following(s) bacteria belong to the family Entero-bacteriaceae?

A. Yersinia
B. Shigella
C. Salmonella
D. All of these

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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

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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

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Question 57

Which of the following genus belongs to family Spirochaetaceae?

A. Treponema
B. Spirochaeta
C. Borrelia
D. All of the above

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Question 58

Primarily human pathogenic bacteria is/are ,

A. Salmonella typhi
B. S paratyphi A
C. S paratyphi B
D. all of these

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