The primary risk to humans infected with Echinococcus granulosus is
A. development of cysticerci.
B. formation of hydatid cysts.
C. intestinal obstruction.
D. anemia.
E. infection of the fetus.
Answer: B
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The compound eyes of insects are very good at ________ but are less effective at ________
a. seeing in the dark / detecting movement b. generating clear images / depth perception c. detecting movement / generating clear images d. depth perception / seeing in the dark
Bilateral symmetry is characteristic of a(n)
a. cnidarian b. roundworm c. echinoderm d. corals e. flatworm
Which of these statements is false regarding kidney
stones? a. They may become lodged inside a ureter or the urethra. b. They may block urine flow. c. A high carbohydrate diet increases the risk for their formation. d. They may cause extreme pain. e. They may lead to permanent kidney damage.
In Bacillus subtilis, ________ controls expression of several sporulation genes; sporulation occurs when it is highly phosphorylated
a. CtrA b. Spo0A c. NtcA d. GFP