A synergistic effect is observed when one organism produces a growth factor utilized by another one organism removes an inhibitory substance for another microbial alteration of pH, aw, Eh favours the growth of another All of these TRUE ANSWER : ? YOUR ANSWER : ?
A microbe, which grows at temperatures above 95° C is most likely to be a protozoan none of these a fungus an archaean TRUE ANSWER : ? YOUR ANSWER : ?
Antimicrobial constituents for the microbial growth in foods are extrinsic factor intrinsic factor both (a) and (b) none of these TRUE ANSWER : ? YOUR ANSWER : ?
The term aerotolerant anaerobe refers to an organism that is killed by oxygen requires less oxygen than is present in air doesn't use oxygen but can grow in the presence of oxygen prefers to grow without oxygen TRUE ANSWER : ? YOUR ANSWER : ?
The growth is normally expressed as __________ in turbidimetric measurement cfu/ml cells per ml mg N2 /ml optical density TRUE ANSWER : ? YOUR ANSWER : ?
Some organisms can use reduced inorganic compounds as electron donors and are termed as chemotrophs photo-organotrophs lithotrophs phototrophs TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following organisms typically get their carbon for biosynthesis from organic compounds? Aerobic, glucose-respiring bacteria (aerobic respiration) None of these Photosynthetic cyanobacteria (phototrophic metabolism) Ammonia-oxidizing bacteria (chemolithotrophic bacteria) TRUE ANSWER : ? YOUR ANSWER : ?
What is the primary source of food for marine life? Zooplankton Sea weed Phytoplankton Grass TRUE ANSWER : ? YOUR ANSWER : ?
The combination of low levels of NaCl, NaNO3 (sodium nitrate), and slightly acid pH can prevent multiplication and toxin formation of C. botulinum Salmonella S. aureus all of these TRUE ANSWER : ? YOUR ANSWER : ?
The reproduction by budding occur in Both (a) and (b) Bacillus subtilis Rhodopseudomonas acidophila Hyphomicrobium vulgare TRUE ANSWER : ? YOUR ANSWER : ?