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Growth and Nutrition of Bacteria

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

light
succinate
H2S
ammonia

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Growth and Nutrition of Bacteria
Implicit factors

both (a) and (b)
can be synergistic
None of these
depend on developing microflora

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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?

Lag phase
Death phase
Exponential phase
Stationary phase

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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
Coulter Counter
Trubidostat

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Growth and Nutrition of Bacteria
Postgates assay technique is useful in determining if a cell is viable even though it is

an obligate aerobe
too small to see
incapable of cell division
a thermophile

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Growth and Nutrition of Bacteria
The average size of cells during the exponential phase of growth is

greater than the lag phase
equal to the lag phase
none of these
lesser than the lag phase

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