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Growth and Nutrition of Bacteria

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

phototrophs
lithotrophs
chemotrophs
organotrophs

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Growth and Nutrition of Bacteria
Which of the following is the suitable temperature range for mesophiles?

>40°C
None of these
20-30°C
25-40°C

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Growth and Nutrition of Bacteria
Bacteria and fungi multiply best

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

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Growth and Nutrition of Bacteria
The combination of low levels of NaCl, NaNO3 (sodium nitrate), and slightly acid pH can prevent multiplication and toxin formation of

Salmonella
S. aureus
C. botulinum
all of these

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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

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

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Growth and Nutrition of Bacteria
Nutrient content and biological structures are considered as

intrinsic factor for microbial growth
implicit factor for microbial growth
None of these
processing factor

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