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Growth and Nutrition of Bacteria

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

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

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Growth and Nutrition of Bacteria
The generation time of a culture that produces two generations per hour is

equal to that produces three generations per hour
None of these
lesser than that produces three generations per hour
greater than that produces three generations per hour

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Growth and Nutrition of Bacteria
A synergistic effect is observed when

All of these
one organism removes an inhibitory substance for another
one organism produces a growth factor utilized by another
microbial alteration of pH, aw, Eh favours the growth of another

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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

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

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

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

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Growth and Nutrition of Bacteria
The term obligate anaerobe refers to an organism that

doesn't use oxygen but tolerates it
uses oxygen when present or grows without oxygen when oxygen is absent
is killed by oxygen
prefers to grow without oxygen

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