A person reports to a clinic complaining of fever and abdominal pain. The abdomen is swollen, and blood tests indicate liver damage. A stool sample is examined under a microscope and found to contain eggs with a spine projecting from its surface. The indications are consistent with infection with
A. Ancylostoma duodenale.
B. Enterobius vermicularis.
C. Echinococcus granulosus.
D. Schistosoma mansoni.
E. Taenia solium.
Answer: D
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A friend of yours calls to say that his car would not start this morning. He asks for your help. You say that you think the battery must be dead. If so, then jump-starting the car from a good battery will solve the problem. In doing so, you are _____
A) testing a theory for why the car will not start B) making observations to inspire a theory for why the car will not start C) stating a hypothesis and using that hypothesis to make a testable prediction D) comparing multiple hypotheses for why the car will not start
Psilotum lacks
a. roots. b. a mechanism to take up water and minerals. c. vascular tissue. d. alternation of generations.
Respond to statements 118–122 with reference to the five biomes
listed below. a. tundra b. chaparral c. desert d. taiga (coniferous forest) e. deciduous forest M 118. In this biome you could find a black spruce. M 119. Plants in this biome are adapted to periodic fires. M 120. In this biome you would expect to find soggy masses of undecayed vegetation. M 121. This biome would be most likely to have a black oak. M 122. This biome is most likely to have a population of moose.
DNA ligase links two __________ DNA fragments by __________ bonds
a. complementary; hydrogen b. circular; covalent c. palindromic; covalent d. linear; covalent e. linear; hydrogen