What structure prevents reflux of stomach contents?
a. Pepsinogen b. Gastric mucosa
c. Upper esophageal sphincter d. Lower esophageal sphincter
d
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Which of the following trend is NOT a factor in the recent FoodCorps program to increase the
number of school gardens? A) decreased corporate investment in sustainable agriculture B) reduced opportunities for children to participate in regular physical activity C) overall poor quality of children's diets D) increase in childhood obesity
Which of the following statements is true of iodine deficiency?
a. It can cause mental impairment and brain damage. b. It mainly affects the very elderly. c. It often is accompanied by zinc deficiency. d. Treatment often includes increased consumption of vegetables high in goitrogens. e. Worldwide, the incidence is rare, thanks in large part to iodized salt.
A deficiency of niacin results in __________.
a. rickets b. scurvy c. pellagra d. beriberi
Which of the following statements about lipids is true?
A. Lipids dissolve in organic solvents, such as alcohol and acetone. B. Most lipids are hydrophilic. C. Lipids dissolve in water-based substances, such as vinegar. D. Oil is more dense than water such that it floats to the bottom when oil and water are mixed.