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Cell Cultures and Characteristics

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

none of these
petroff-hausser counting chamber
coulter counter
hemocytometer

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

pyocyanin
chlororaphin
β-carotene
pyoverdin

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Cell Cultures and Characteristics
Which of the following is used for the proper maintenance and preservation of pure cultures?

Periodic transfer to fresh media
All of these
Preservation by lyophilization
Preservation by overlaying cultures with mineral oil

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Cell Cultures and Characteristics
Important example(s) of enriched medium/media is/ are

Loeffler's serum slope
Blood agar
Bordet-gengou medium
All of these

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Cell Cultures and Characteristics
All bacteria that inhabit the human body are

phototroph
autotrophs
heterotrophs
chemolithotrophs

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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
80°C for 10 minutes
90°C for 10 minutes

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