The combined term for “genes” and “chromosomes” is:
3
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High concentrations of electrolytes in the bloodstream can cause
A. hyponatremia. B. overhydration. C. cells to shrink. D. cells to swell.
Which of the following describes a feature of cis-fatty acids and trans-fatty acids?
a. In nature, most double bonds are trans b. Hydrogenation converts trans-fatty acids to cis-fatty acids c. The conversion of cis-fatty acids to trans-fatty acids is inhibited by the presence of antioxidants d. In the body, trans-fatty acids are metabolized more like saturated fats than like unsaturated fats
Which of the following statements is true of iodine deficiency?
a. It can cause mental impairment and brain damage. b. It mainly affects the very elderly. c. It often is accompanied by zinc deficiency. d. Treatment often includes increased consumption of vegetables high in goitrogens. e. Worldwide, the incidence is rare, thanks in large part to iodized salt.
How does bacterial overgrowth sometimes lead to fat malabsorption?
a. The bacteria dismantle the bile acids needed for fat emulsification. b. The bacteria compete for the sites that absorb fat. c. The bacteria cause the formation of soaps that disrupt the fat. d. The bacteria themselves consume the fat.