# Growth and Nutrition of Bacteria

## Click on any option to know the CORRECT ANSWERS

 Question 1
Microaerophilic bacteria are those which require
 A 21 % oxygen for growth B low levels of oxygen for growth (lesser than O$_{2}$ present in atmosphere) C oxygen for activation of enzymes D none of the above

 Question 2
The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of
 A Liebig's law of the minimum B Shelford's law of tolerance C quorum sensing D Heisenberg's principle of uncertainty

 Question 3
Organisms, using organic compounds as electron donors are called
 A lithotrophs B phototrophs C chemotrophs D organotrophs

 Question 4
Nutrient content and biological structures are considered as
 A implicit factor for microbial growth B intrinsic factor for microbial growth C processing factor D none of the above