One of the chief functions of chromium is participation in the metabolism of
a. iron.
b. proteins.
c. carbohydrates.
d. metallothionein.
e. lipids.
ANS: C
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In recombinant DNA technology, after a gene that expresses a desired trait is identified and extracted, that gene is
A. manipulated in a laboratory to cause it to assemble the desired protein. B. implanted into a target organism, such as a corn seedling, that lacks this gene. C. combined with the DNA of a host cell, usually a microorganism, which is then cultured. D. copied using 3D printing technology and shipped to genetic libraries worldwide.
What is a good recommendation to the elderly for eating out? a. Select meals mainly from fast-food restaurants because they have many excellent choices. b. Avoid pasta dishes because they are all high in fat
c. Eat at full-service restaurants because they always have a variety of fruits and vegetables included with their meals. d. Purchase take-out meals at supermarkets because they only sell nutrient-dense foods. e. Ask to substitute fruit or vegetables in place of high-fat side items.
Greg is trying to decide which brand of cereal to buy, but he is a somewhat confused by the health claims. Which statement represents the highest level of significant scientific agreement?
a. "This cereal promotes a healthy heart." b. "This cereal supports heart health." c. "This product contains whole grains, which have been proven to reduce the risk of heart disease and certain cancers." d. "Very limited and preliminary scientific research suggests this product can reduce risk for cancers; FDA concludes that there is little scientific evidence supporting this claim." e. "Anecdotal evidence demonstrates a clear relationship between consumption of this product and elimination of health risk factors."
About ____ percent of a meal's energy value is used up in stepped-up metabolism in the five or so hours following that meal
a. 5 b. 10 c. 15 d. 20 e. 25