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
Which of the following organisms typically get their carbon for biosynthesis from carbon dioxide?

Ammonia-oxidizing bacteria (chemolithotrophic bacteria)
Aerobic, glucose-respiring bacteria (aerobic respiration)
Anaerobic, glucose-respiring bacteria (anaerobic respiration)
Glucose-fermenting bacteria (fermentation)

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