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Growth and Nutrition of Bacteria

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

ammonia
H2S
light
succinate

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

requires less oxygen than is present in air
doesn't use oxygen but can grow in the presence of oxygen
prefers to grow without oxygen
is killed by oxygen

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Growth and Nutrition of Bacteria
A spore differs from an actively replicating bacterium in that the spore

is metabolically inactive
All of these
is produced during a process involving asymmetric division
is able to withstand more extreme conditions than the replicating cell

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Growth and Nutrition of Bacteria
Autotrophic bacteria are those which

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

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

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

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Growth and Nutrition of Bacteria
Organisms such as lactobacilli that have elaborate requirements for specific nutrients i.e. vitamins and other growth promoting substances, are generally called as

photo-organotrophs
chemotrophs
fastidious hetrotrophs
chemo-lithotrophs

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