Exercise: Cell Cultures And Characteristics

Questions for: Cell Cultures And Characteristics

A disease producing species occurring in a mixed culture can often be selected on the basis of its
A:
pathogenic properties
B:
special carbon source
C:
special nitrogen source
D:
none of these
Answer: A
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For the selection of lactobacilli present in cheddar cheese, the pH of the medium is maintained at
A:
6.35
B:
5.35
C:
4.35
D:
5.75
Answer: B
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Agar is used for solidifying culture media because
A:
it does not affect by the growth of bacteria
B:
it does not add to the nutritive properties of the medium
C:
the melting and solidifying points of agar solution are not the same
D:
all of the above
Answer: D
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Pseudomonas aeruginosa forms a blue water soluble pigment called
A:
pyocyanin
B:
chlororaphin
C:
pyoverdin
D:
β-carotene
Answer: A
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Mac-Conkey medium is an example of
A:
transport medium
B:
enrichment medium
C:
differential medium
D:
all of these
Answer: C
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