The effect of parathyroid hormone is to ________ blood calcium levels
Fill in the blank(s) with correct word
raise
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Which statement factors into artificial but not natural selection?
A. Most organisms are capable of producing more offspring than typically survive. B. Phenotypic variation of a species has variable appeal to humans interested in that species. C. Phenotypic variation exists within populations. D. Phenotypic variation can influence reproductive success. E. Phenotypic variation within a species is due in part to inherited characteristics.
The disinfectant action of phenol and phenolic derivatives mainly is due to ________.
A. its inherent detergent action B. extraction of lipids from membranes C. oxidation of disulfide bonds in proteins D. membrane damage and protein denaturation E. damage to nucleic acids and proteins caused by free radicals
Water is capable of rising to the tops of the tallest trees due to all of the following except:a
the hydrogen bonds among water molecules. b. the cohesiveness of water molecules. c. the adhesion of water to the walls of xylem cells. d. the evaporative pull of transpiration. e. root pressure
Why do diseases involving widespread infection often result in a fever?
A) The inflammatory and immune responses result in extra heat production. B) The microorganisms trick the brain's temperature control center into creating a hot environment that favors their growth. C) The brain's temperature control center responds to inflammation by creating a hot environment unfavorable to the growth of microorganisms. D) The inflammatory response result is less heat production.