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Growth and Nutrition of Bacteria

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

decline phase
stationary phase
lag phase
log phase

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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

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 organism which obtain their energy from chemicals are designated as

chemotrophs
autotrophs
organotrophs
prototrophs

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Growth and Nutrition of Bacteria
The cell reproduction in bacteria may occur by

fragmentation
all of these
binary fission
budding

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Growth and Nutrition of Bacteria
A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the

organism cannot produce superoxide dismutase and/or catalase
organism can tolerate oxygen
organism should be grown in an anaerobic chamber
broth is sterile

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Growth and Nutrition of Bacteria
Postgates assay technique is useful in determining if a cell is viable even though it is

incapable of cell division
an obligate aerobe
a thermophile
too small to see

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