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Growth and Nutrition of Bacteria

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

all of these
humidity
composition of gas phase
storage temperature

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Growth and Nutrition of Bacteria
Organisms, using organic compounds as electron donors are called

organotrophs
phototrophs
chemotrophs
lithotrophs

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Growth and Nutrition of Bacteria
Which of the following procedures uses a photocell to measure absorbance of a culture to regulate the flow of culture media?

Petroff-Hausser chamber
Hemostat
Coulter Counter
Trubidostat

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Growth and Nutrition of Bacteria
Bacteria and fungi multiply best

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

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Growth and Nutrition of Bacteria
The total biomass of an organism will be determined by the nutrient present in the lowest concentration relative to the organism's requirements is a statement of

Shelford's law of tolerance
quorum sensing
Liebig's law of the minimum
Heisenberg's principle of uncertainty

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

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

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