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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
A microbe, which grows at temperatures above 95° C is most likely to be

an archaean
a fungus
none of these
a protozoan

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Growth and Nutrition of Bacteria
Microaerophilic bacteria are those which require

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

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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?

Trubidostat
Hemostat
Petroff-Hausser chamber
Coulter Counter

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

phototrophs
chemotrophs
lithotrophs
organotrophs

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Growth and Nutrition of Bacteria
An organism is completely dependent on atmospheric O2 for growth. This organism is

obligate aerobe
acidophile
osmotolerant
facultative anaerobe

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Growth and Nutrition of Bacteria
The growth is normally expressed as __________ in turbidimetric measurement

cfu/ml
optical density
cells per ml
mg N2 /ml

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