A person's absorption of calcium varies based on:
a. vitamin A status

b. protein intakes.
c. gender.
d. age or life stage.
e. body composition.

d

Nutritional Science

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Which of the following hormones requires selenium for its synthesis?

A. estrogen
B. insulin
C. cortisol
D. thyroxine

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A scientist adds 5 mcg of the mineral cadmium to the daily diet of 100 4-week-old laboratory mice. After twelve weeks, the researcher weighs and takes blood samples from each mouse. According to her findings, the mice lost weight during the 12-week period and they have abnormal levels of certain hormones in their blood. Based on this information and your knowledge of scientific research, what would you tell the researcher about her findings?   

A. The findings need to be summarized in a research article for submission to a peer-reviewed nutrition journal.   B. She needs to conduct more tests on the animals' blood, because her findings are incomplete. C. The findings are not meaningful or valid because of the way she designed her study. D. Her results are very interesting and she should report her findings to nutrition scientists, so they can repeat her study and confirm the results.

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A senior woman lives in an urban area with no local grocery stores. She rarely purchases fresh fruits and vegetables as this would require her to use public transportation more frequently for the cross-town trip to the store. In this scenario, what type of factor may be affecting her nutritional status the most?

a. Environmental factor b. Food and nutrient factor c. Lifestyle factor d. System factor

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Nutritional Science

How are most inborn errors of metabolism acquired?

a. autosomal dominant inheritance b. autosomal recessive inheritance c. infection d. dietary deficiency e. blood toxicity

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Nutritional Science