Microbes and Society: Chapter 11 Practice Quiz

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor. (Kris.. do you want me to turn on this option?)

1: Which of the following refers to which microorganisms are present in a food?
	A: quantitative aspects
	B: qualitative aspects
	C: dose
	D: microbial load

2: Fish and eggs represent foods that fall in the category of being:
	A: non-perishable
	B: semi-perishable
	C: perishable
	D: none of the above

3: Rework refers to the practice of:
	A: taking an unacceptable food product and returning it to the beginning of the manufacturing process
	B: checking a food product to determine the number of microbes it has in it
	C: determining how long a food can be stored before it will spoil
	D: identifying the possible hazards associated with a food production facility

4: Glycocalyx-producing microorganisms will a produce a spoilage condition in milk known as:
	A: sour curd
	B: sweet curdling
	C: ropiness
	D: ripening

5: Aflatoxins are a series of toxins that typically accumulate in:
	A: dairy products
	B: peanuts, soybeans, corn
	C: eggs
	D: fish

6: Commercial sterilization is designed to eliminate:
	A: most bacteria
	B: the most resistance bacterial spores
	C: viruses
	D: all microbes

7: A method of pasteurization that passes milk through a hot cylinder at 71.7 C for 15-17 seconds is called:
	A: the holding method
	B: the flash method
	C: ultrapasteurization
	D: sterile pasteurization

8: Which of the following is not a characteristic of gamma rays?
	A: used to extend the shelf life of fruits, vegetables, and fish
	B: increases the distance that fresh food can be transported
	C: causes food to become radioactive at a low level
	D: kills microbes by reacting with and destroying microbial DNA

9: Which of the following is not a machine used to dry liquids for preservation?
	A: autoclave
	B: belt heater
	C: spray dryer
	D: heated drum

10: Another name for freeze-drying is:
	A: osmosis
	B: lyophilization
	C: smoking
	D: irradiation

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