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Cell Cultures and Characteristics

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

pyocyanin
β-carotene
chlororaphin
pyoverdin

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Cell Cultures and Characteristics
Cell counting can be carried out by

membrane filter count
direct microscopic count using petroffhansser counting chamber
plate counting
All of these

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Cell Cultures and Characteristics
For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at

4.35
5.75
5.35
6.35

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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
Viable plate count can be obtained using

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

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

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

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