What percentage of the water that enters a nephron is reabsorbed into the blood in the absence of ADH?
A) 50% B) 25% C) 99% D) 80%
D
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A student travels to Brazil by boat on the Amazon River, without visiting the doctor prior to traveling for recommended vaccinations for travel to South America. The student becomes ill during the trip and is quarantined
Which of the diseases listed below does the student most likely have? A) hantavirus B) yellow fever C) Ebola D) Q fever
Carbon and hydrogen have similar electronegativities and combine together to form hydrocarbon molecules. What type of bonds form between these atoms?
A. hydrogen. B. ionic. C. polar covalent. D. nonpolar covalent. E. electrostatic.
Which of the following would use a haploid-dominant life cycle?
a. most fungi b. most animals c. most bacteria d. most plants
Poliovirus receptors are found ________.
A. in cells of all tissues B. in spinal cord anterior horn cells only C. in gut cells only D. in nasopharynx, gut, and spinal cord anterior horn cells