A double-blind experiment is one in which:
a. neither the scientists nor the subjects know who is receiving the treatment.
b. both the scientists and the subjects know who is receiving the treatment.
c. only the human subjects committee and the scientists know who is receiving treatment.
d. only the scientists know who is receiving the treatment.
a
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The single most effective and critical health advantage for individuals wherever they live is
A. government support. B. safe and accessible water supply. C. well-built shelter. D. adequate calorie intake.
A similar type of anemia is produced when there is a deficiency of either
a. iron and zinc b. vitamin B12 or folate c. vitamin B6 or vitamin B12 d. vitamin K or vitamin C
_____________________ is a drug that blocks the absorption of about 30% of dietary fat from the small intestine
a. Olestra b. Orlistat c. Phentermine/Topiramate d. All of the above
All of the following can be classified as B vitamins except
A. riboflavin. B. biotin. C. choline. D. niacin.