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Home Q & A Board Biology-Related Homework Help General Biology
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Maiem Maiem
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6 years ago
The Staphylococcus aureus toxins are
 
  A) neurotoxins.
  B) endotoxins.
  C) ectotoxins.
  D) superantigen toxins.


Pickling is a type of food preservation utilizing
 
  A) weak acids.
  B) basic substances.
  C) lyophilization.
  D) irradiation.


Psychrotolerant microorganisms can survive and grow at
 
  A) refrigeration temperatures.
  B) boiling temperatures.
  C) extreme fluctuations in water availability.
  D) high salt or sugar concentrations.


The pH of MOST foods is
 
  A) basic.
  B) neutral or basic.
  C) acidic.
  D) neutral or acidic.


The principle behind salt or sugar preservation is to
 
  A) introduce a mechanical barrier to microbial invasion.
  B) reduce water activity (aw).
  C) introduce a microbicide in anticipation of contaminating bacteria or fungi.
  D) accomplish all of the described functions depending on the food being preserved.
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tainataina
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6 years ago
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Maiem Author
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#2
6 years ago
Thanks for your help!
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