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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is

aerotolerant anaerobe
neutrophile
osmotolerant
acidophile

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

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

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Growth and Nutrition of Bacteria
An organism is completely dependent on atmospheric O2 for growth. This organism is

facultative anaerobe
acidophile
osmotolerant
obligate aerobe

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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
C. botulinum
S. aureus
all of these

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Growth and Nutrition of Bacteria
The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as

decline phase
lag phase
stationary phase
log phase

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Growth and Nutrition of Bacteria
The fragmentation occurs in

Bacillus subtilis
None of these
Nocardia species
Streptomyces species

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