Which of the following is NOT part of the response of an airway to specific allergens that initiate an asthmatic response?
A) increased inflammatory response
B) increased airway resistance
C) increased secretion of mucus
D) increased histamine release
E) increased release of corticosteroids
Ans: E) increased release of corticosteroids
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If a gene has two alleles, and allele A has a frequency of 83%, then allele a has a frequency of ____
Fill in the blank with the appropriate word.
The intermediate-disturbance hypothesis predicts that the most species rich communities would contain
A. both r- and K-selected species. B. high rates of evapotranspiration. C. predominantly K-selected species. D. intermediate biomass. E. None of the answers is correct.
The process by which elevated nutrient levels lead to an overgrowth of algae and the subsequent depletion of water oxygen levels is known as
A. succession. B. decomposition. C. eutrophication. D. assimilation E. biogeochemical cycling.
Human influenza viruses are usually derived from influenza viruses that infect
A. horses and sheep. B. cattle and water buffalo. C. a variety of primates. D. birds and pigs. E. chimpanzees and gorillas.