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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
Which of the following has more tolerance for acidic pH (lower pH)?

None of these
Yeast and moulds
Bacteria
E. coli

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Growth and Nutrition of Bacteria
What are the extrinsic factors for the microbial growth?

humidity
storage temperature
composition of gas phase
all of these

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

succinate
H2S
light
ammonia

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Growth and Nutrition of Bacteria
Some organisms can use reduced inorganic compounds as electron donors and are termed as

lithotrophs
chemotrophs
photo-organotrophs
phototrophs

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

organotrophs
lithotrophs
phototrophs
chemotrophs

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

uses oxygen when present or grows without oxygen when absent
requires less oxygen than is present in air
is killed by oxygen
doesn't use oxygen but tolerates it

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