Which component of teeth increases their resistance to destruction by acids and bacteria?
A) calcium B) phosphorus
C) fluorohydroxyapatite D) hydroxyapatite
C
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Most of the digestive processes occur in the ________.
A. large intestine B. mouth C. stomach D. small intestine
People who have bulimia nervosa typically avoid gaining weight after bingeing on food by ________.
A. purging, including self-induced vomiting B. abusing stimulant drugs, such as cocaine, caffeine, and ephedra C. taking thyroid hormone supplements to increase their metabolic rate D. abusing alcohol
The recommended amounts of vitamins and minerals for infants are based on the
a. average amounts present in body tissues of thriving infants. b. adult RDA scaled down to infants on a per kg body weight basis. c. older child's RDA scaled down to the infant on a per kg body weight basis. d. average amounts ingested by thriving infants breastfed by well-nourished mothers.
Which of the following actions is the best way to reduce your chances of catching a cold?
A) consuming the herb Echinacea B) taking vitamin C supplements C) avoiding outside activities on very cold days D) frequent hand-washing with soap and water