What diagnostic tool is used to confirm a diagnosis of meningitis or encephalitis?
A) computed tomography (CT scan)
B) lumbar puncture
C) magnetic resonance imaging (MRI)
D) blood count
E) throat swap
Answer: B
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A flower develops from the end of the floral shoot, called the receptacle
a. True b. False
Turgor is the
A. pressure placed on the inside of a cell membrane of a plant by water. B. cohesion of water molecules with each other, as they pass through a plant's vascular tissues. C. diffusion of water across plant cell membranes in response to the nutrient solute concentrations. D. passage of water vapor out of a plant through the stomatal openings. E. adhesion of water molecules to the inside of a cell membrane of a plant's xylem.
Each carbon atom can share pairs of electrons with as many as ____ other atoms
a. 2 b. 3 c. 4 d. 5 e. 6
If an overlap develops between the ranges of two closely related species, and if the species occupy the same niche in the zone of overlap, what will probably happen in the zone of overlap?
A) A new species will arise by hybridization. B) Both species will coexist, provided the environment in the zone of overlap is different from that in either individual range. C) Both species will coexist, provided the environment in the zone of overlap is similar to that of one of the individual ranges. D) One species will take over most or all of the zone of overlap.