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Cell Cultures and Characteristics

Cell Cultures and Characteristics
In the pour plate method, the mixed culture is diluted directly in tubes of

both (a) and (b)
none of these
liquid agar medium
sterile liquid usually water

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Cell Cultures and Characteristics
Pseudomonas aeruginosa forms a blue water soluble pigment called

pyoverdin
β-carotene
chlororaphin
pyocyanin

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Cell Cultures and Characteristics
Agar is used for solidifying culture media because

it does not affect by the growth of bacteria
it does not add to the nutritive properties of the medium
the melting and solidifying points of agar solution are not the same
All of these

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Cell Cultures and Characteristics
For the selection of endospore-forming bacteria, a mixed culture can be heated at

60°C for 10 minutes
70°C for 10 minutes
80°C for 10 minutes
90°C for 10 minutes

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Cell Cultures and Characteristics
Which of the following bacteria can grow in alkaline pH?

Salmonella
Shigella
Vibrio cholerae
Lactobacilli

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Cell Cultures and Characteristics
The solidifying agent commonly used in preparation of media is/are

both (a) and (b)
agar
none of these
silica gel

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