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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Bacteria and fungi multiply best

above 38°C
between 16-38°C
none of these
below 16°C

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Growth and Nutrition of Bacteria
Which of the following has more tolerance for acidic pH (lower pH)?

None of these
Yeast and moulds
Bacteria
E. coli

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Growth and Nutrition of Bacteria
The equation used to obtain bacterial population by binary fission is

log(N/No) = nlog 2
log N/No = (0.3010) n
All of these
N = No2n

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Growth and Nutrition of Bacteria
The growth is normally expressed as __________ in turbidimetric measurement

cfu/ml
cells per ml
optical density
mg N2 /ml

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Growth and Nutrition of Bacteria
What are the extrinsic factors for the microbial growth?

composition of gas phase
humidity
all of these
storage temperature

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Growth and Nutrition of Bacteria
Implicit factors

depend on developing microflora
can be synergistic
both (a) and (b)
None of these

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