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Cell Cultures and Characteristics

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

heterotrophs
chemolithotrophs
autotrophs
phototroph

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Cell Cultures and Characteristics
Agar is used for solidifying culture media because

it does not add to the nutritive properties of the medium
the melting and solidifying points of agar solution are not the same
All of these
it does not affect by the growth of bacteria

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

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

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Cell Cultures and Characteristics
Cell counting can be carried out by

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

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Cell Cultures and Characteristics
Plate counts are often reported as

thousands/ml
Both (a) and (b)
cfu/ml
cfu

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

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

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