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Microbiology

Microbiology
Species of Shigella which is predominant in India is

S boydii
S dysenteriae
S flexneri
S sonnei

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Microbiology
In Widal test, the significant titre for O agglutinins is generally

1:2.00 or more
1:100 or more
1:150 or more
1:50 or more

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Microbiology
Heat-stable enterotoxin of Escherichia coli activates

none of these
both of the above
adenylate cyclase
guanylate cyclase

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Microbiology
The media which serve(s) as enrichment media for Salmonella is/are

Tetrathionate broth
Selenite-F broth
Brilliant green tetrathionate broth
All of these

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Microbiology
Primarily human pathogenic bacteria is/are ,

S paratyphi B
Salmonella typhi
S paratyphi A
all of these

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Microbiology
The most important bacterium developing acidity in both low and high salt brines is

L. plantarum
L. lactis
B. subtilis
L. brevis

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