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Cell Cultures and Characteristics

Cell Cultures and Characteristics
All bacteria that inhabit the human body are

chemolithotrophs
heterotrophs
phototroph
autotrophs

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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

selective medium
differential medium
enrichment medium
enriched medium

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Cell Cultures and Characteristics
The concentration of agar to obtain semi solid media is

>10%but<20%
1.5-20%
0.5% or less
>10%

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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)
sterile liquid usually water
none of these
liquid agar medium

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Cell Cultures and Characteristics
In the process of freeze drying, a dense cell suspension is placed in small vials and is frozen at

-60 to -78°C
-20 to -30°C
-30 to -48°C
-48 to -58°C

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

acid fast organisms
gram positive bacteria
coliform bacteria
yeasts

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