Which repair mechanism identifies daughter strands by methylation?
A. Recombinational repair
B. Direct repair
C. Base excision repair
D. Mismatch repair
E. Nucleotide excision repair
F. Nonhomologous end joining (NHEJ)
D
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Which of the following statements is NOT true of lophophorates?
A. Their tentacles serve both in respiration and in feeding. B. They have a U-shaped digestive tract. C. They have a true coelom. D. There are three phyla of them: Phoronida, Bryozoa, Brachiopoda. E. They are parthenogenetic.
Which of the following statements about tuberculosis (TB) is false?
A. MDR TB is more expensive to treat. B. Not completing a full course of antibiotic can select for MDR strains. C. HIV and TB can be transmitted in the same manner. D. The spread of TB can be very rapid. E. The reservoir of TB is humans and no vector is required for transmission.
Which of the following statements regarding viremia is incorrect?
A. Droplet transmission of viruses like the measles virus results in viremia. B. The variola virus multiplies in white blood cells, and cell lysis results in viremia. C. HHV-3 is disseminated to the skin by viremia. D. Shingles is a manifestation of persistent viremia after a course of chicken pox.
The embryo is recognizable as human and is called a fetus by which week of pregnancy?
a. eighth b. twelfth c. sixteenth d. twentieth e. twenty-fourth