Improvements in nutrient composition, such as when corn is genetically modified to contain higher amounts of its limiting amino acids, is a strategy known as
a. biofortification.
b. reverse DNA enrichment.
c. USDA approved enrichment.
d. nutritional transdevelopment.
e. artificial fortification.
Q. 2The toxin produced in improperly refrigerated meats that can cause diarrhea, nausea, vomiting, abdominal cramps and fever in 1 to 6 hours is ____________________.
Fill in the blank with correct word
Q. 3What is the chief purpose of using ozone as a commercial water treatment?
a. It kills microorganisms.
b. It complexes with heavy metals.
c. It stabilizes the carbon filtration process.
d. It promotes chlorine dissipation and thus enhances taste.
e. It softens the water.
Q. 4What is the process by which water is purified by pressurizing it and forcing it across a membrane?
a. Ozonation
b. Distillation
c. Reverse osmosis
d. Activated carbon filtration
e. Pasteurization
Q. 5What is the average yearly intake (gallons) per person of bottled water in the United States?
a. 15
b. 30
c. 45
d. 60
e. 75
Q. 6Water that has the odor of rotten eggs is most likely contaminated with
a. sulfur.
b. dioxins.
c. Giardia.
d. Cryptosporidium.
e. chloramines.
Q. 7What is meant by potable water?
a. Water fit for drinking
b. Water that must be boiled before drinking
c. Water that must be chlorinated before drinking
d. Water suitable only for use on lawns and gardens
e. Water to which fluoride has been added
Q. 8Which of the following is a characteristic of antibiotic use in livestock?
a. Development of antibiotic-resistant organisms is very rare.
b. Proper cooking of the meat destroys any traces of antibiotics.
c. Farmers use more than 5 times more antibiotic in livestock than physicians use in people.
d. Because the antibiotics have a short half-life, the FDA permits slaughter of the animals at any time.
e. There is no evidence of harm to the environment or human health from the use of antibiotics in livestock.
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