Scientists enroll 500 healthy adults in a study and collect dietary and other lifestyle information about the group. After 6 years, the scientists determine that study participants who ate at least 5 servings of fruits and vegetables daily were less likely to develop high blood pressure than participants who ate fewer than 5 servings of these foods daily. This study is an example of a(n) ________ study.
A. introspective
B. nutritive
C. retrospective
D. prospective
Answer: D
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A) superoxide dismutase B) catalase C) glutathione peroxidase D) microsomal enzyme-oxidizing system
Which of the following statements about folic acid is false?
A) Folic acid helps prevent morning sickness. B) Folic acid can prevent neural tube defects. C) Folic acid plays a role in producing new cells. D) Women who wish to conceive should consume 400 micrograms of folic acid from dietary supplements, fortified foods, or both.
What is a feature of water?
A) ?It is not a vital nutrient. B) ?It is not found in foods. C) ?It is oxidized to yield energy. D) ?It is generated from the oxidation of energy nutrients.
Healthy, light-skinned individuals can make sufficient vitamin D to meet the body's needs with about ________ of sun exposure on their face, arms, and hands 2 or 3 times per week.
A. 5 minutes B. 2 minutes C. 15 minutes D. 10 minutes