FOr chap 7! .PDF - Exam Name MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the quest 1 The degree of

FOr chap 7! .PDF - Exam Name MULTIPLE CHOICE Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the quest 1)The degree of susceptibility a food has to microbial activity is determined by (its)1) A)physical characteristics.B)water content.C)chemical characteristics.D)all of the above.Answer:D 2)Flour and sugar are classified as ________ foods. 2) A) semiperishable B) nonperishable C) selectively perishable D) highly perishable Answer: B 3)At what temperature are most household freezers kept?3) 4)The rate of contaminant microbial growth during the exponential phase in food depends on4) 5)Psychrotolerant microorganisms can survive and grow at 5) A) high salt or sugar concentrations. B) boiling temperatures. C) refrigeration temperatures. D) extreme fluctuations in water availability. Answer: C 6)The pH of most foods is6) 7)The principle behind salt or sugar preservation is to 7) A) introduce a microbicide in anticipation of contaminating bacteria or fungi. B) introduce a mechanical barrier to microbial invasion. C)reduce water availability (a w ). D) accomplish all of the above, depending on the food being preserved. Answer: C 8)Which of the following chemical preservatives has NOT been demonstrated to pose a humanhealth hazard? 8) A)sodium propionateB)nitritesC)propylene oxideD)ethylene oxideAnswer:A 1
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9)The major reason why it is unlikely that any new chemical preservatives will be added to the list ofapproved chemical preservatives in the near future is that 9) 10)Pickling is a type of food preservation utilizing10) 11)TheStaphylococcus aureustoxins are11) 12)A sealed homogenization system, which avoids aerosolization of any foodborne microbialcontaminants and prevents outside microbial contamination of the food, is called a sealed 12) A)food processor.B)stomacher.C)blender.D)paddler.Answer:B
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  • Fall '18
  • chady rahmeh

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