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Identification of Bacteria

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

crystal violet
methyl red
phenolpthalene
safranin

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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)
desiccation
extreme temperatures
radiation

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

Salmonella
Streptococcus
Staphylococcus
Proteus

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

Green
Colourless
Purple
Pink

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Identification of Bacteria
Gram staining was developed accidentally in 1884 by

Alexander Fleming
Joseph Christian Gram
Robert Gram
Hans Christian Gram

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

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

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