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Growth and Nutrition of Bacteria

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

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

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Growth and Nutrition of Bacteria
What is the primary source of food for marine life?

Phytoplankton
Grass
Sea weed
Zooplankton

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

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

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Growth and Nutrition of Bacteria
The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as

decline phase
stationary phase
log phase
lag phase

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

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

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

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

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