Exposure to high levels of _____ is related to decreased sperm production and abnormal sperm motility and shape.
A. zinc
B. iron
C. lead
D. iodine
E. selenium
Answer: C
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For normal-weight individuals, _______________ kcal/kg of actual body weight per day is recommended during critical illness.
Fill in the blank(s) with the appropriate word(s).
Which B vitamin may protect against colon cancer in the early stages of development?
a. vitamin B5 b. folate c. niacin d. pyridoxine e. thiamin
When the diet contains an adequate amount of protein, the body can synthesize niacin from the amino acid:
a. lysine. b. tryptophan. c. phenylalanine. d. valine. e. tyrosine.
The 2010 Dietary Guidelines for Americans make all of the following suggestions except:
a. eat a variety of vegetables, especially dark-green and red and orange vegetables. b. use oils to replace solid fats where possible. c. consume at least half of all grains as whole grains. d. choose diets that emphasize refined and enriched grain products. e. increase intake of fat-free or low-fat milk and milk products.