1. The temperature range that allows the greatest amount of microbial growth is
ID: 77961 • Letter: 1
Question
1. The temperature range that allows the greatest amount of microbial growth is from:
a. 32° - 140° F
c. 0° - 100° F
b. 40° - 140° F
d. 60° - 160° F
2. All of the following are needed for bacterial growth EXCEPT:
a. Proper temperature
c. Human cells as a host
b. Nutrients
d. Moisture
3. Most cases of food poisoning occur due to mishandling of foods at home, not in the marketplace or restaurants.
a. True
b. False
4. Which of the following is the cause of the severe, whole-body symptoms associated with food infection?
a. The pathogenic microbe itself (virus, bacteria, etc)
c. Neurotoxins produced by the microbe
b. Enterotoxins produced by the microbe
d. Any of the above are possible
5. All of the following are used as antioxidants in foods EXCEPT:
a. Vitamin A
c. Vitamin C
b. BHA
d. Vitamin E
a. 32° - 140° F
c. 0° - 100° F
b. 40° - 140° F
d. 60° - 160° F
Explanation / Answer
1. D) 60-160 F
60 to 160 degF corresponds to the range for mesophilic bacteria, although below 68 degF is for psychrophiles, but most bacteria optimally grow at these temperatures.
2. C) human cells as host
Human cells as host is not a mandatory requirement for bacterial cells to grow, though appropriate temperatures, nutrients and moisture requirements, especially water, is required for the growth of bacterial cells.
3. False
Most food poisoning cases occur by mishandling at restaurants and market places as food items are not taken care or properly and washed properly at market places but taken care at home .
4. B) enterotoxins
The bacteria can produce enterotixins , I.e. Poisoning in the intestines . Enterotoxins target the intestines secreted by bacterial organisms.
5. A) Vit A
Vitamin A has still not been used as antioxidant in foods though beta carotene has been used as antioxidant.
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