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Cell Cultures and Characteristics

Cell Cultures and Characteristics
Plate counts are often reported as

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

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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
differential medium
enriched medium

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

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

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

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Cell Cultures and Characteristics
The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as

none of these
enrichment medium
selective medium
differential medium

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

petroff-hausser counting chamber
coulter counter
none of these
hemocytometer

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