Rabies is caused by a
A) bacterium. B) prion. C) virus. D) viroid. E) fungus.
C
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If a single stranded RNA virus contains genomic RNA that is complementary to the mRNA that it produces, what type of virus is this categorized as?
A. Minus Strand or Negative Strand is acceptable. B. Plus Strand C. Positive Strand D. Negative Strand E. Minus Strand
Research on the aging process shows that wounds of the elderly heal more slowly and that they are more susceptible to disease. These are problems associated with an aging ________ system
A) respiratory B) immune C) integumentary D) digestive E) endocrine
Which of the following statements does not describe a way in which fungi differ from plants?
A. Fungi have nuclear mitosis. B. Fungi have cell walls made of cellulose. C. Fungi have filamentous bodies. D. Fungi have nonmotile sperm. E. Fungi are heterotrophic.
In the annual rings of woody trees, how does the cell size within the xylem of the spring and summer wood compare to the fall and winter wood?
A. It is more dense. B. It is younger. C. The cells are larger. D. It has smaller vessels. E. The cell walls are thicker.