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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Generation time of Escherichia coli is

20 hours
200 hours
20 minutes
20 days

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Growth and Nutrition of Bacteria
The fragmentation occurs in

None of these
Nocardia species
Bacillus subtilis
Streptomyces species

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Growth and Nutrition of Bacteria
A synergistic effect is observed when

microbial alteration of pH, aw, Eh favours the growth of another
All of these
one organism produces a growth factor utilized by another
one organism removes an inhibitory substance for another

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

obligate aerobe
osmotolerant
facultative anaerobe
acidophile

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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
Trubidostat
Coulter Counter

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Growth and Nutrition of Bacteria
A microbe, which grows at temperatures above 95° C is most likely to be

a protozoan
an archaean
a fungus
none of these

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