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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 fragmentation occurs in

Nocardia species
Streptomyces species
Bacillus subtilis
None of these

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

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

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

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

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

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

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Growth and Nutrition of Bacteria
Which of the following procedures uses a photocell to measure absorbance of a culture to regulate the flow of culture media?

Hemostat
Petroff-Hausser chamber
Trubidostat
Coulter Counter

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