What factors determine the patterns of ocean currents?
What will be an ideal response?
The patterns are determined by Earth's rotation, wind, heating by the sun, and the presence of continents.
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To create a multicellular eukaryotic transgenic organism, a researcher
A) introduces foreign DNA into a fertilized ovum. B) injects a gene of interest into a somatic cell. C) injects a gene of interest into several somatic cells. D) introduces foreign DNA into somatic cells in culture and transplants them.
Respiratory syncytial virus
A. uses the nasopharynx as its main replication site. B. has symptoms of dyspnea and rales. C. can be treated with the antiviral aerosol ribavirin. D. causes serious disease in infants 6 months old or younger. E. All of the choices are correct.
Integumentary exchange of gases implies that the animal ____
a. has a shell b. has a tracheal system c. lives in a moist location d. has a siphon e. lives in an arid location
Blood is delivered to each nephron by
a. an efferent arteriole. b. peritubular capillaries. c. a renal capsule. d. an afferent arteriole. e. proximal tubules.