The most common cause of traveler's diarrhea is
A) Salmonella enterica.
B) Giardia intestinalis.
C) Cryptosporidium parvum.
D) Escherichia coli.
E) Shigella flexneri.
D
Bloom's Taxonomy: Knowledge
Section: Bacterial Diseases of the Digestive System
Learning Outcome: 23.10
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The increased osmolarity of the filtrate after Bowman's capsule is caused by:
A. diffusion of NaCl out of the proximal tubule. B. diffusion of HCO3– out of the proximal tubule. C. active transport of NaCl out of the proximal tubule. D. active transport of HCO3– out of the proximal tubule.
Sympatric speciation often occurs in animals through polyploidy
Indicate whether the statement is true or false.
Nematocysts are found only in
a. cnidarians. b. roundworms. c. crustaceans. d. echinoderms. e. arthropods.
What structures regulate blood flow into capillary beds?
A) Peyer's patches B) venous valves C) postcapillary sphincters D) precapillary sphincters