Bacteria and fungi multiply best below 16°C between 16-38°C none of these above 38°C TRUE ANSWER : ? YOUR ANSWER : ?
Organisms, using organic compounds as electron donors are called organotrophs lithotrophs chemotrophs phototrophs TRUE ANSWER : ? YOUR ANSWER : ?
Postgates assay technique is useful in determining if a cell is viable even though it is incapable of cell division a thermophile an obligate aerobe too small to see TRUE ANSWER : ? YOUR ANSWER : ?
The microorganisms that grow best in a low-oxygen environment is called a (n) facultative aerobe microaerophile anaerobe TRUE ANSWER : ? YOUR ANSWER : ?
Organisms such as lactobacilli that have elaborate requirements for specific nutrients i.e. vitamins and other growth promoting substances, are generally called as chemotrophs chemo-lithotrophs photo-organotrophs fastidious hetrotrophs TRUE ANSWER : ? YOUR ANSWER : ?
The generation time of a culture that produces two generations per hour is equal to that produces three generations per hour None of these greater than that produces three generations per hour lesser than that produces three generations per hour TRUE ANSWER : ? YOUR ANSWER : ?
The growth is normally expressed as __________ in turbidimetric measurement optical density cfu/ml cells per ml mg N2 /ml TRUE ANSWER : ? YOUR ANSWER : ?
The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as log phase stationary phase decline phase lag phase TRUE ANSWER : ? YOUR ANSWER : ?
The term facultative anaerobe refers to an organism that doesn't use oxygen but tolerates it requires less oxygen than is present in air uses oxygen when present or grows without oxygen when absent is killed by oxygen TRUE ANSWER : ? YOUR ANSWER : ?
A synergistic effect is observed when All of these microbial alteration of pH, aw, Eh favours the growth of another one organism produces a growth factor utilized by another one organism removes an inhibitory substance for another TRUE ANSWER : ? YOUR ANSWER : ?