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Growth and Nutrition of Bacteria

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

log phase
stationary phase
decline phase
lag phase

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Growth and Nutrition of Bacteria
An organism is completely dependent on atmospheric O2 for growth. This organism is

acidophile
obligate aerobe
osmotolerant
facultative anaerobe

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

is killed by oxygen
doesn't use oxygen but can grow in the presence of oxygen
requires less oxygen than is present in air
prefers to grow without oxygen

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Growth and Nutrition of Bacteria
A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the

organism should be grown in an anaerobic chamber
organism can tolerate oxygen
organism cannot produce superoxide dismutase and/or catalase
broth is sterile

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

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

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Growth and Nutrition of Bacteria
Implicit factors

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

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