Which of the following has more tolerance for acidic pH (lower pH)? None of these E. coli Bacteria Yeast and moulds TRUE ANSWER : ? YOUR ANSWER : ?
The equation used to obtain bacterial population by binary fission is log(N/No) = nlog 2 log N/No = (0.3010) n All of these N = No2n TRUE ANSWER : ? YOUR ANSWER : ?
In the exponential phase, the cells and cell mass first increases then decreases double at a constant rate are constant decreases TRUE ANSWER : ? YOUR ANSWER : ?
The fragmentation occurs in None of these Streptomyces species Nocardia species Bacillus subtilis TRUE ANSWER : ? YOUR ANSWER : ?
Pseudomonas pseudoflava can grow as none of these chemo-organotrophs both (a) and (b) chemo-lithotrophs TRUE ANSWER : ? YOUR ANSWER : ?
Exponential phase of growth curve of bacteria is of limited duration because of accumulation of toxic metabolites all of these rise in cell density exhaustion of nutrients TRUE ANSWER : ? YOUR ANSWER : ?
The ability of Vibrio fischeri to produce bioluminescence chemicals only when a certain population density has been reached is an example of Shelford's law of tolerance Liebig's law of the minimum quorum sensing Heisenberg's principle of uncertainty TRUE ANSWER : ? YOUR ANSWER : ?
Microaerophilic bacteria are those which require oxygen for activation of enzymes low levels of oxygen for growth (lesser than O2 present in atmosphere) None of these 21 % oxygen for growth TRUE ANSWER : ? YOUR ANSWER : ?
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 prefers to grow without oxygen requires less oxygen than is present in air TRUE ANSWER : ? YOUR ANSWER : ?
A microbe, which grows at temperatures above 95° C is most likely to be an archaean none of these a fungus a protozoan TRUE ANSWER : ? YOUR ANSWER : ?