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Cell Cultures and Characteristics

Cell Cultures and Characteristics
Which of the following bacteria can grow in alkaline pH?

Lactobacilli
Shigella
Vibrio cholerae
Salmonella

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Cell Cultures and Characteristics
Mac-Conkey medium is an example of

differential medium
enrichment medium
all of these
transport medium

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Cell Cultures and Characteristics
To select cholera-causing bacterium, Vibrio cholerae, the pH of the medium is maintained at a pH of

8.5
6.79
8.90
3.5

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Cell Cultures and Characteristics
In the pour plate method, the mixed culture is diluted directly in tubes of

both (a) and (b)
none of these
sterile liquid usually water
liquid agar medium

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Cell Cultures and Characteristics
When a substance is added to a solid medium which inhibits the growth of unwanted bacteria but permits the growth of wanted bacteria, it is known as

selective medium
differential medium
enrichment medium
enriched medium

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

pyocyanin
β-carotene
chlororaphin
pyoverdin

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