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Cell Cultures and Characteristics

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

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

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Cell Cultures and Characteristics
Agar is used for solidifying culture media because

All of these
it does not add to the nutritive properties of the medium
it does not affect by the growth of bacteria
the melting and solidifying points of agar solution are not the same

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Cell Cultures and Characteristics
Important example(s) of enriched medium/media is/ are

Loeffler's serum slope
Bordet-gengou medium
Blood agar
All of these

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

Shigella
Salmonella
Lactobacilli
Vibrio cholerae

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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

enrichment medium
enriched medium
differential medium
selective 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
aquatic bacteria to grow
none of these
gram (+)ve intestinal bacteria to grow

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