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Cell Cultures and Characteristics

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

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

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Cell Cultures and Characteristics
The solidifying agent commonly used in preparation of media is/are

silica gel
none of these
both (a) and (b)
agar

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Cell Cultures and Characteristics
For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at

5.75
6.35
5.35
4.35

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

all of these
enrichment medium
differential medium
transport medium

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

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

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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

enriched medium
differential medium
enrichment medium
selective medium

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