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GROWTH AND NUTRITION OF BACTERIA

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
a thermophile
too small to see
an obligate aerobe

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Growth and Nutrition of Bacteria
What are the extrinsic factors for the microbial growth?

all of these
composition of gas phase
storage temperature
humidity

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Growth and Nutrition of Bacteria
Quantitative measurement of bacterial growth can be carried out by measuring

all of these
cell mass
cell activity
cell count

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Growth and Nutrition of Bacteria
Organisms such as lactobacilli that have elaborate requirements for specific nutrients i.e. vitamins and other growth promoting substances, are generally called as

fastidious hetrotrophs
photo-organotrophs
chemo-lithotrophs
chemotrophs

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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

all of these
C. botulinum
Salmonella
S. aureus

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