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Growth and Nutrition of Bacteria

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

light
ammonia
succinate
H2S

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

psychrophilic
any of these
mesosphilic
thermophilic

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Growth and Nutrition of Bacteria
Pseudomonas pseudoflava can grow as

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

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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
prefers to grow without oxygen
uses oxygen when present or grows without oxygen when oxygen is absent
is killed by oxygen

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Growth and Nutrition of Bacteria
Antimicrobial constituents for the microbial growth in foods are

none of these
extrinsic factor
intrinsic factor
both (a) and (b)

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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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