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Growth and Nutrition of Bacteria

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

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

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Growth and Nutrition of Bacteria
A synergistic effect is observed when

one organism produces a growth factor utilized by another
microbial alteration of pH, aw, Eh favours the growth of another
All of these
one organism removes an inhibitory substance for another

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Growth and Nutrition of Bacteria
In the exponential phase, the cells and cell mass

double at a constant rate
decreases
first increases then decreases
are constant

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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?

Coulter Counter
Trubidostat
Hemostat
Petroff-Hausser chamber

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

none of these
a fungus
an archaean
a protozoan

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

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

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