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Cell Cultures and Characteristics

Cell Cultures and Characteristics
Cell size and cell number can be measured using

coulter counter
none of these
petroff-hausser counting chamber
hemocytometer

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

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

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Cell Cultures and Characteristics
Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.

bile salts
sugars
low levels of nitrogen
low concentration of various dyes

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Cell Cultures and Characteristics
Viable plate count can be obtained using

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

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

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

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Cell Cultures and Characteristics
The concentration of agar to obtain semi solid media is

>10%
1.5-20%
0.5% or less
>10%but<20%

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