Which of the following statements comparing Enterobius vermicularis and Diphyllobothrium latum is incorrect?
A. Both helminths affect primarily children.
B. D. latum has fish as an intermediate host, whereas E. vermicularis has no intermediate host.
C. E. vermicularis is best treated with mebendazole, whereas D. latum is susceptible to praziquantel.
D. Symptoms of both infections are mild.
Answer: A
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Mole percent (G+C) of DNA is useful for determining relatedness at the ________ level.
A. class B. genus C. kingdom D. None of the choices are correct.
Glial cells function to ____
a. conduct electrical impulses b. support and nourish neurons c. secrete collagen fibers into the extracellular matrix d. release secretions from a free surface e. move ions across the cell membrane
You cut a stalk of celery and put it in a glass of water containing red food coloring overnight. The next morning you observe the celery stalks are now red. This has occurred because the conducted the colored water up through the stalks.
A. phloem B. ground tissue C. xylem D. dermal tissue E. stomata
Which of the following is NOT true of enzyme behavior?
a. Enzyme shape may change during catalysis. b. Enzymes cannot make something happen that would not happen on its own. c. All enzymes have an active site where substrates are temporarily bound. d. Each enzyme can catalyze a wide variety of different reactions. e. Enzymes speed up reactions.