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Microbiology

Microbiology
Which of the following is/are not a gram-positive bacteria?

Streptococci
None of these
Pseudomonas
Mycobacteria

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

Methyl red reaction
All of these
Glucose fermentation
Indole reaction

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Microbiology
Which of the following serotypes of Salmonella can cause gastroenteritis?

S newport
S enteritidis
S typhimurium
All of these

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Microbiology
Spirochaetes exhibit

All of these
translatory motion
flexion and extension motility
corkscrew-like rotatory movement

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

Pseudomonas
Clostridia
all of these
Mycoplasmas

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Microbiology
Which of the following property(ies), shown by the organisms belong(s) to the family Enterobacteriaceae?

They are catalase-positive
They are oxidase-negative
All of these
They ferment glucose

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