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Cell Cultures and Characteristics

Cell Cultures and Characteristics
Which of the following bacteria dies quickly after drying?

Staphylococcus aureus
Treponema pallidium
Pseudomonas aeruginosa
Mycobacterium tuberculosis

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Cell Cultures and Characteristics
Which of the following techniques may be performed quantitatively to determine the number of bacteria of a particular type?

Streak plate technique
Spread plate
Both (a) and (b)
Pour plate

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Cell Cultures and Characteristics
Treponema species from human oral cavity can be selected by using

incubation temperature
all of these
pH of the medium
cell size and motility

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

None of these
Gram staining
Wet mount
Dilution and plating

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

hemocytometer
coulter counter
none of these
petroff-hausser counting chamber

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

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

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