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Microbiology

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

Lactobacillus
All of these
Staphylococci
Streptococci

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Microbiology
Slimy or ropy kraut is caused by

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

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

Glucose fermentation
Methyl red reaction
Indole reaction
All of these

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

None of these
Salmonella
Pseudomonas
Clostridia

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Microbiology
Thermus thermopiles is a

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

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Microbiology
Slippery pickles occur due to

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

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