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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
The equation used to obtain bacterial population by binary fission is

All of these
log(N/No) = nlog 2
N = No2n
log N/No = (0.3010) n

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

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

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Growth and Nutrition of Bacteria
Microaerophilic bacteria are those which require

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

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Growth and Nutrition of Bacteria
Bacteria of genus Nitrosomonas use __________ as their electron source.

light
ammonia
H2S
succinate

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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

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

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Growth and Nutrition of Bacteria
An organism that expends energy to grow in a habitat with a low water activity in order to maintain internal solute concentrations to retain water is

osmotolerant
alkalophile
acidophile
aerotolerant anaerobe

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