Vitamin supplements may be harmful. Which supplement, when taken in high doses, may increase the risk of osteoporosis and bone fractures in older adults?
A. vitamin A
B. riboflavin
C. vitamin B12
D. vitamin C
Answer: A
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Which of the following organs prefer fat as their energy source?
A. heart, brain, and liver B. red blood cells and liver C. heart, liver, and resting muscles D. nervous system and muscle
When a slice of fresh apple turns a brown color, this is most likely the result of
a. oxidation. b. dehydration. c. microbial contamination. d. ethylene oxide treatment in the ripening process. e. lack of nutrients in the apple itself.
A noncrystalline candy is one in which
a. crystals are so fine as to be imperceptible. b. crystals are nonexistent. c. interfering agents form the structure. d. interfering agents crystallize. e. several ingredients crystallize.
The storage of carbohydrates by forming glycogen for later use is an example of ____ work
A) chemical B) electrical C) mechanical D) transportation