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Microbiology

Microbiology
Primarily human pathogenic bacteria is/are ,

S paratyphi B
Salmonella typhi
all of these
S paratyphi A

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Microbiology
Dysentery may be caused by

enteroinvasive E. coli
enterotoxigenic E. coli
enteropathogenic Escherichia coli
verotoxigenic E. coli

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Microbiology
Which of the following is a gram-positive bacteria?

Staphylococci
All of these
Streptococci
Lactobacillus

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Microbiology
The Bacillus cereus causes gasteroenteritis by the production of an exoenterotoxin which is released in food as a result of

cell permeation
cell autolysis
cell growth
cell damage

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Microbiology
The growth of black-pigmented Bacillus nigrificans, a causative agent of black pickle is favoured by

neutral or slightly alkaline brine
presence of carbohydrate like glucose
All of these
low level of available nitrogen

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Microbiology
Thermus thermopiles is a

gram positive archebacteria
gram negative archebacteria
gram positive eubacteria
gram negative eubacteria

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