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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
In the exponential phase, the cells and cell mass

are constant
double at a constant rate
first increases then decreases
decreases

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

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

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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

C. botulinum
Salmonella
all of these
S. aureus

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

chemotrophs
phototrophs
organotrophs
lithotrophs

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

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

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

reproduce
evolve
grow in nutrient agar
move

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