A human fecal sample is examined and found to contain a few strobila. The person is probably infected with
A. Echinococcus granulosus.
B. Giardia intestinalis.
C. Taenia.
D. Schistosoma.
E. Necator americanus.
Answer: C
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Roots obtain cations through cation exchange, where soil particles absorb ____ provided directly or indirectly by the root, and thus release cations.
a. Clb. b. K+ c. H+ d. water e. CO2
Which of the following most directly gives rise to primary vascular tissues?
a. protoderm b. apical meristem c. ground meristem d. vascular cambium e. procambium
If a woman of blood type A has a child of blood type
O, the father may belong to a. blood type A, AB, or O, but not B. b. blood type O only. c. blood type A or B only. d. blood type A, B, or O, but not AB. e. any blood type other than A.
If a woman were exposed to a chemical that caused the cilia in her reproductive system to stop moving, what specifically is likely to happen?
A) She would no longer be able to ovulate, and early menopause would occur. B) Ova could no longer pass through oviducts. C) Spontaneous abortions would occur. D) She would have many ovarian cysts.