Which two hepatitis viruses are generally acquired in a similar manner?
A) HBA and HBC
B) HBV and HBC
C) HBA and HBV
B) HBV and HBC
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Which of the following statements is false?
a. Connective tissue of the cervix weakens during the final weeks of pregnancy. b. It is not possible for a woman to become pregnant after engaging in intercourse if the male does not ejaculate. c. The rupture of the amniotic sac with the release of its fluid is one of the events that usually precedes birth. d. After the baby is born, uterine contractions continue so that the placenta is expelled. e. Just as females should examine their breasts each month for possible lumps, males should also self-examine their testes for lumps that possibly indicate cancer.
Which of the following would likely not contribute to the surface area available for water absorption from the soil by a plant root system?
A) root hairs B) endodermis C) mycorrhizae D) fungi associated with the roots E) fibrous arrangement of the roots
Usually, bacteria only make tryptophan when tryptophan is absent or available in low concentration. However, a particular bacterial mutation makes tryptophan all the time whether or not tryptophan is present. What could explain this phenotype?
A) trpA is mutated B) trpE is mutated C) trpD is mutated D) the antiterminator hairpin is unable to form E) the terminator hairpin is unable to form
The DNA template ATGCGTTA is transcribed into an RNA strand with the sequence
A) TACGCAAT. B) UAACGCAU. C) UACGCAAU. D) AUGCGAAU.