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GROWTH AND NUTRITION OF BACTERIA

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

acidophile
facultative anaerobe
obligate aerobe
osmotolerant

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Growth and Nutrition of Bacteria
Microaerophilic bacteria are those which require

oxygen for activation of enzymes
21 % oxygen for growth
low levels of oxygen for growth (lesser than O2 present in atmosphere)
None of these

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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

lag phase
decline phase
stationary phase
log phase

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

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

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

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

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