Which of the following accurately describes free radicals?
a. They are destroyed by air pollution.
b. They arise from normal metabolic reactions.
c. They promote cell repair and act as an anti-inflammatory agent.
d. They are immune to the presence of antioxidant nutrients.
e. They are more common in infants and children than adults and the elderly.
Answer: B
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Children may have difficulty concentrating and learning during the mid-morning hours if
A. they did not eat breakfast. B. they got too much sleep. C. they do not like the class topic. D. they were too active the night before.
The best beverage choices for an older adult include
A. high calorie soft drinks. B. water and milk. C. caffeinated drinks like coffee and tea. D. alcohol, for heart health.
Seth took part in a clinical trial in which he was given a month's supply of medication to treat his headaches. At the end of the month, he reported to his doctor that the pills had reduced both the frequency and intensity of his pain. Unknown to Seth or to his doctor was the fact that Seth had been given pills with no active ingredient. The phenomenon of improved symptoms that Seth experienced is commonly known as the
A. bias toward improvement. B. placebo effect. C. study participant bias. D. experimental result.
A patient with anorexia nervosa shows signs of malnutrition. During initial referring, the nurse carefully assesses the patient for
a. hyperkalemia. b. hypoglycemia. c. hypercalcemia. d. hypophosphatemia.