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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
During exponential growth, the growth rate is

both (a) and (b)
number of generations per unit time
reciprocal of generation time
none of these

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

facultative anaerobe
obligate aerobe
osmotolerant
acidophile

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

are highly susceptible to penicillin
form a long chain glycocalyx
produce a blue-green pigment
make their own food

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Growth and Nutrition of Bacteria
The straightforward method of binary fission explains how bacteria

reproduce
grow in nutrient agar
move
evolve

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Growth and Nutrition of Bacteria
Exponential phase of growth curve of bacteria is of limited duration because of

all of these
exhaustion of nutrients
rise in cell density
accumulation of toxic metabolites

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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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