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Identification of Bacteria

Identification of Bacteria
The primary stain of Gram's method is

safranin
crystal violet
phenolpthalene
methyl red

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Identification of Bacteria
Catalase production is negative in which of the following?

Streptococcus
Salmonella
Staphylococcus
Proteus

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Identification of Bacteria
What is the colour of gram-negative bacteria on a gram staining?

Colourless
Pink
Purple
Green

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

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

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Identification of Bacteria
The gram-negative organisms is

None of these
Actinomyces
Clostridium
Bacillus

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Identification of Bacteria
Which of the following is a substitute for crystal violet used in gram-staining procedure?

Safranin
Phenolpthalene
Bromocresol green
Methylene blue

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