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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Lag phase is also known as

period of initial adjustment
transitional period
none of these
generation time

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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

C. botulinum
Salmonella
S. aureus
all of these

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

E. coli
Bacteria
None of these
Yeast and moulds

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Growth and Nutrition of Bacteria
The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of

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

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Growth and Nutrition of Bacteria
The organism which grows best above 45°C are called

any of these
thermophilic
psychrophilic
mesosphilic

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Growth and Nutrition of Bacteria
Antimicrobial constituents for the microbial growth in foods are

none of these
intrinsic factor
extrinsic factor
both (a) and (b)

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