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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
none of these
reciprocal of generation time

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Growth and Nutrition of Bacteria
All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as

autotrophs
phototrophs
chemotrophs
photo-organotrophs

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

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

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

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

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Growth and Nutrition of Bacteria
Organisms, using organic compounds as electron donors are called

phototrophs
lithotrophs
chemotrophs
organotrophs

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

acidophile
neutrophile
osmotolerant
aerotolerant anaerobe

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