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Cell Cultures and Characteristics

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
Which of the following bacteria can grow in acidic pH?

Lactobacilli
Shigella
Vibrio cholerae
Salmonella

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Cell Cultures and Characteristics
Which of the following methods is most likely to be quantitative?

None of these
Dilution and plating
Gram staining
Wet mount

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

chemolithotrophs
phototroph
heterotrophs
autotrophs

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

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

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Cell Cultures and Characteristics
Cell counting can be carried out by

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

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