An eight-year-old girl in rural Wisconsin has chills, headache, and fever and reports having been bitten by mosquitoes. How would you confirm your diagnosis of arboviral encephalitis?
A) ELISA test for IgM antibodies
B) brain biopsy for Negri bodies
C) Gram stain of cerebrospinal fluid
D) examination of local mosquitoes
E) complement fixation test for IgG antibodies
A
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Microtubules are assembled from the protein ____
a. keratin b. myosin c. laminin d. actin e. tubulin
In this illustration, some of the organisms are vertebrates while others are both vertebrates and amniotes. Which of the following pairs are in both clades?
a. lancelets and lampreys
b. lampreys and humans
c. rabbits and lizards
d. lancelets and rabbits
If you could monitor the activity from the photoreceptors of rods and cones in the retina during a dream, would you expect these cells to be producing electrical signals? Why?
A) Yes, because the rods and cones are reproducing images that are then sent to the brain. B) Yes, because our eyes move during sleep, and this stimulates the rods and cones. C) No, because rods and cones only convert light energy into electrical signals. D) No, because rods and cones never produce electrical signals.
Which of the following is NOT a characteristic of Bacillus anthracis?
A) is aerobic B) is gram-positive C) forms endospores D) found in soil E) produces endotoxins