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Cell Cultures and Characteristics

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

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

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Cell Cultures and Characteristics
Viable plate count can be obtained using

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

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

β-carotene
chlororaphin
pyoverdin
pyocyanin

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Cell Cultures and Characteristics
A medium containing crystal violet dye plus sodium deoxycholate will allow

gram (-)ve intestinal bacteria to grow
aquatic bacteria to grow
none of these
gram (+)ve intestinal bacteria to grow

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

petroff-hausser counting chamber
hemocytometer
coulter counter
none of these

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Cell Cultures and Characteristics
A disease producing species occurring in a mixed culture can often be selected on the basis of its

special nitrogen source
special carbon source
none of these
pathogenic properties

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