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Cell Cultures and Characteristics

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

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

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

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

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Cell Cultures and Characteristics
In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at

-20 to -30°C
-60 to -78°C
-48 to -58°C
-30 to -48°C

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

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

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Cell Cultures and Characteristics
Treponema species from human oral cavity can be selected by using

cell size and motility
pH of the medium
all of these
incubation temperature

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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?

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

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