Diseases that are good candidates for eradication have
A) only a human reservoir.
B) no asymptomatic phase.
C) an environmental reservoir.
D) only a human reservoir and no asymptomatic phase.
Answer: C
Biology & Microbiology
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Which one of the following terms applies to the phylum Cnidaria?
A. radial symmetry B. pseudocoelomate C. Parazoa D. triploblastic E. protostome
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Answer the question using the accompanying figure. The antigen-binding site is indicated by number____
a. 1 b. 2 c. 4 d. 5 e. 6
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Which tissue lines all internal surfaces and the lining of the gut?
a. epithelial b. loose connective c. supportive connective d. fibrous e. adipose
Biology & Microbiology