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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

gram positive bacteria
coliform bacteria
yeasts
acid fast organisms

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Cell Cultures and Characteristics
A medium containing crystal violet dye plus sodium deoxycholate will allow

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

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

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

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Cell Cultures and Characteristics
Intestinal bacteria can grow in the presence of __________ whereas nonintestinal bacteria are usually inhibited.

bile salts
low levels of nitrogen
low concentration of various dyes
sugars

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Cell Cultures and Characteristics
Treponema species from human oral cavity can be selected by using

all of these
cell size and motility
incubation temperature
pH of the medium

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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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