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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
The organism which grows best above 45°C are called

psychrophilic
thermophilic
any of these
mesosphilic

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Growth and Nutrition of Bacteria
Microaerophilic bacteria are those which require

None of these
low levels of oxygen for growth (lesser than O2 present in atmosphere)
oxygen for activation of enzymes
21 % oxygen for growth

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Growth and Nutrition of Bacteria
Pseudomonas pseudoflava can grow as

chemo-organotrophs
none of these
chemo-lithotrophs
both (a) and (b)

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Growth and Nutrition of Bacteria
The cell reproduction in bacteria may occur by

fragmentation
all of these
binary fission
budding

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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
prefers to grow without oxygen
is killed by oxygen

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Growth and Nutrition of Bacteria
The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of

quorum sensing
Shelford's law of tolerance
Heisenberg's principle of uncertainty
Liebig's law of the minimum

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