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Identification of Bacteria

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

Green
Purple
Pink
Colourless

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

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

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Identification of Bacteria
Which of the following(s) is/ are oxidase-positive bacteria?

Pseudomonas
All of these
Vibrio
Neisseria

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

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

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

Staphylococcus
Salmonella
Streptococcus
Proteus

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

all of these
Nocardia
Lepra bacilli
Tubercle bacilli

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