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Cell Cultures and Characteristics

Cell Cultures and Characteristics
Selective media facilitate growth of only one kind of organism. Saboraud medium is used to selectively isolate

acid fast organisms
coliform bacteria
gram positive bacteria
yeasts

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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
Plate counts are often reported as

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

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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
3.5
6.79
8.90

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Cell Cultures and Characteristics
Which of the following hint(s) suggest/s that a given specimen is likely to contain anaerobic bacteria?

All of these
Foul odour
Presence of sulphur granules
Gas in specimen

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

enrichment medium
selective medium
enriched medium
differential medium

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