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Microbiology

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

Lactobacillus
Streptococci
All of these
Staphylococci

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Microbiology
Gram-positive bacteria, responsible for food poisoning, is/are

all of these
Mycoplasmas
Pseudomonas
Clostridia

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Microbiology
Slippery pickles occur due to

growth of encapsulated bacteria
broken scums of film yeasts on the surface of brine
both (a) and (b)
addition of high amount of salt

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Microbiology
The reaction(s) that is/are usually positive in Escherichia coli, is/ are

Glucose fermentation
Indole reaction
All of these
Methyl red reaction

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Microbiology
Heat-stable enterotoxin of Escherichia coli activates

none of these
adenylate cyclase
both of the above
guanylate cyclase

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Microbiology
Slimy or ropy kraut is caused by

Lactobacillus lactis
encapsulated varieties of Lactobacillus plantarum
None of these
encapsulated varieties of Lactobacillus brevis

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