The disease osteoporosis involves loss of both mineral and organic components from bones. Factors that may contribute to the development of osteoporosis include
_____ prolonged disuse of muscles.
_____ lack of calcium and vitamin D in the diet.
_____ excess fat in the diet.
_____ a decline in estrogen following menopause in women.
_____ a history of extreme sport participation.
__X__ prolonged disuse of muscles.
__X__ lack of calcium and vitamin D in the diet.
_____ excess fat in the diet.
__X__ a decline in estrogen following menopause in women.
_____ a history of extreme sport participation.
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Ethanol (beverage alcohol) is an inhibitor of ADH. Therefore, a person consuming a couple of mixed drinks should excrete:
a. less water because ADH promotes reabsorption b. the alcohol because ADH cannot degrade it c. ketone bodies formed from the alcohol d. more water because ADH normally promotes reabsorption e. more water plus the alcohol due to the ADH inhibition
What are the three parts of a DNA nucleotide?
What will be an ideal response?
When a population of organisms is evolving, what can you be sure is happening?
A) It's improving. B) It's stable (no change). C) It's getting bigger. D) It's changing.
_____, which include lobsters and crabs, have _____ legs and, in the ocean, fill many of the ecological roles filled by insects on land
A. Crustaceans; branched B. Chelicerates; branched C. Crustaceans; unbranched D. Chelicerates; unbranched E. none of these