One of the limitations of epidemiologic studies is that the results cannot be interpreted as proving a(n) _____

a. association
b. positive correlation
c. negative correlation
d. relationship to be causal


d

Nutritional Science

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Calorie needs decline after age 30 years or so because ________.

A. thrifty metabolism begins B. basal metabolism declines C. the body becomes more efficient in using energy D. All of these responses are correct.

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Amino acids containing the mineral _____ help to form the shape of proteins

a. sulfur b. sodium c. phosphorous d. selenium e. magnesium

Nutritional Science

In which of the following functions does vitamin B6 play a key role?

A. blood clotting B. folding of the embryonic neural tube C. synthesis of thyroid hormones D. transamination

Nutritional Science