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Growth and Nutrition of Bacteria

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

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

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Growth and Nutrition of Bacteria
The microorganisms that grow best in a low-oxygen environment is called a (n)

microaerophile
aerobe
anaerobe
facultative

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Growth and Nutrition of Bacteria
Exponential phase of growth curve of bacteria is of limited duration because of

exhaustion of nutrients
all of these
rise in cell density
accumulation of toxic metabolites

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Growth and Nutrition of Bacteria
An organism that expends energy to grow in a habitat with a low water activity in order to maintain internal solute concentrations to retain water is

acidophile
aerotolerant anaerobe
alkalophile
osmotolerant

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Growth and Nutrition of Bacteria
Nutrient content and biological structures are considered as

intrinsic factor for microbial growth
processing factor
None of these
implicit factor for microbial growth

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

Zooplankton
Sea weed
Grass
Phytoplankton

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