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Identification of Bacteria

Identification of Bacteria
Which of the following(s) show(s) positive results for phenylalanine deaminase test?

Providencia
All of these
Proteus
Morganella

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Identification of Bacteria
The deinococci are gram-positive cocci and rods that are distinctive in their unusually great resistance to

radiation
desiccation
extreme temperatures
both (a) and (b)

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Identification of Bacteria
The organisms that can be acid-fast stained is

Tubercle bacilli
all of these
Nocardia
Lepra bacilli

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Identification of Bacteria
The process of Gram staining is based on the ability of bacterial cell wall

to retain part of both dyes
to retain the crystal violet dye during solvent treatment.
to retain the safranin dye
none of above

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Identification of Bacteria
Which of the following organisms can be demonstrated with silver impregnation method?

Salmonella
Vibrios
Shigella
Spirochaetes

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Identification of Bacteria
Which of the following is commonly used as Gram's decolouriser?

A mixture of ethyl alcohol and acetone
Ethyl alcohol
Acetone
Methyl alcohol

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