A sexually transmitted disease is an example of
A) Direct contact.
B) Droplet transmission.
C) Fomite.
D) Vector.
E) Vehicle transmission.
Ans: A) Direct contact.
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A. Axons B. Dendrites C. Fibroblasts D. Neurons E. Astrocytes
The first barrier to invasion is
a. antibody production. b. intact skin and body cavity linings. c. direct attack by white blood cells. d. innate immunity. e. development of memory cells.
Leaf abscission:a
occurs as a response to increased temperatures in temperate climates. b. occurs as a response to dry conditions in tropical climates. c. involves the formation of a tendril at the base of the petiole. d. occurs year-round on deciduous plants. e. does not occur in conifers
Infection with the fungus Coccidioides immitis is commonly diagnosed using a(n) ________ assay
A) precipitation B) immunoblot C) direct fluorescent antibody D) viral hemagglutination inhibition E) viral neutralization