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Growth and Nutrition of Bacteria

Growth and Nutrition of Bacteria
An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is

osmotolerant
neutrophile
acidophile
aerotolerant anaerobe

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

ammonia
succinate
H2S
light

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

extrinsic factor
none of these
intrinsic 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?

Petroff-Hausser chamber
Trubidostat
Coulter Counter
Hemostat

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Growth and Nutrition of Bacteria
Starvation proteins are produced by a culture during which of the following segments of the growth curve?

Exponential phase
Stationary phase
Death phase
Lag phase

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Growth and Nutrition of Bacteria
During exponential growth, the growth rate is

both (a) and (b)
none of these
reciprocal of generation time
number of generations per unit time

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