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Cell Cultures and Characteristics

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

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

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Cell Cultures and Characteristics
Viable plate count can be obtained using

both (a) and (b)
Pour plate method
Hemocytometer
Spread plate method

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Cell Cultures and Characteristics
Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?

All of these
Presence of sulphur granules
Foul odour
Gas in specimen

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

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

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

pyocyanin
β-carotene
pyoverdin
chlororaphin

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Cell Cultures and Characteristics
Which of the following methods is most likely to be quantitative?

Gram staining
Dilution and plating
None of these
Wet mount

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