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Microbiology

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

Staphylococci
Streptococci
All of these
Lactobacillus

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Microbiology
Xylose lysine deoxycholate (XLD) agar is better selective medium than the deoxycholate citrate agar (DCA) because

it is selective
it contains high salt concentration
it imparts better growth
it is less inhibitory to S. Dysentriae and S. flexneri

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Microbiology
Black kraut is caused by

None of these
the combined actions of plant enzymes and micro-organisms
the plant enzymes
the micro-organisms

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Microbiology
A bacterial food intoxication refers to

None of these
both (a) and (b)
food borne illness caused by the presence of a bacterial toxin formed in food
illness caused by presence of pathogens

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Microbiology
Which of the following genus belongs to family Spirochaetaceae?

All of these
Spirochaeta
Borrelia
Treponema

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Microbiology
Which of the following species/subspecies of Klebsiella produce indole?

K pneumoniae subspecies rhinoscleromatis
K oxytoca
K pneumoniae subspecies aerogenes
K pneumoniae subspecies pneumoniae

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