Growth and Nutrition of Bacteria
Microaerophilic bacteria are those which require

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

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Growth and Nutrition of Bacteria
Which of the following is not the characteristic of a growth curve?

Shows development of microbial population under relatively stable environmental conditions
Graphs numbers of microbes versus time
Each growth curve consists of four distinct phases
Plotted with logarithmic numbers

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Growth and Nutrition of Bacteria
A culture broth tube was very turbid at the surface but clear throughout the rest of the tube indicating that the

organism cannot tolerate oxygen
organism should be grown in an anaerobic chamber
organism are aerobes
organism cannot produce superoxide dismutase and/or catalase

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