Which step in tumor formation requires the involvement of a carcinogen?
a. Promotion
b. Metastasis
c. Progression
d. Initiation
d
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Which of the following statements is true of essential trace minerals in general?
a. They are needed in the diet in amounts greater than 100 milligrams a day. b. They can be found in a wide variety of foods. c. Toxicities are rare. d. They function independently in the body. e. They are found in a few select foods.
Which of the following is descriptive of iron deficiency and behavior?
a. The practice of pica may enhance iron absorption b. Changes in behavior precede the appearance of anemia c. The practice of pica may delay the onset of iron-induced behavioral changes d. Adults are more resistant to iron-induced behavioral changes than children
Which two types of vegetarian diets include only plant foods?
a. Quasi-vegetarians and vegans b. Far vegetarian and raw food dieters c. Vegans and raw food dieters d. Lacto-vegetarians and lacto-ovo vegetarians
The best source of phosphorus is: a. animal protein
b. fruit. c. vegetable protein. d. grain products. e. fats and oils.