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Microbiology

Microbiology
Soft pickles are made so by pectolytic enzymes mostly from

none of these
yeasts
bacteria
moulds

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Microbiology
Transmission of bubonic plague is by

ingestion
rat flea
inhalation
all of these

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Microbiology
A bacterial food intoxication refers to

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

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Microbiology
Gassy spoilage of green olives is usually caused by

Bacillus spp
Enterobacter spp
all of these
Clostridium spp

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

All of these
Proteus mirabilis
Yersinia pestis
Pseudomonas aeruginosa

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

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

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