Regarding Borrelia burgdorferi and Lyme disease, which one of the following is most accurate?
A. Borrelia burgdorferi infects a larger percentage of the rodent reservoir in western states, such as California, than in northeastern states, such as New York
B. Pathogenesis of Lyme disease is based on the production of an exotoxin that induces interleukin-2 production by T-helper cells
C. The vaccine against Lyme disease contains the capsular polysaccharide of all four serotypes as the immunogen
D. Close family members of those infected with B. burgdorferi should be given ciproflaxacin
E. Borrelia burgdorferi is transmitted to human by the bit of ticks of the genus Ixodes
Ans: E. Borrelia burgdorferi is transmitted to human by the bit of ticks of the genus Ixodes
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In the book entitled,On the Origin of Species by Means of Natural Selection, ____ proposed that natural mechanisms
produce and transform the diversity of life on Earth.
a. Alfred Russel Wallace b. Charles Lyell c. Charles Darwin d. Joseph Hooker e. Charles Darwin and Alfred Russel Wallace
If a plant were placed in continual darkness, it would continue to open and close its stomata at approximately the same
time each day. This phenomenon is governed by: a. annual rhythms. b. floral clocks. c. transpiration. d. temporal mechanisms. e. circadian rhythms.
Ticks can live on dogs, cats and other mammals. The ticks benefit but the mammal is harmed. This relationship is called
a) parasitism b) commensalism c) competition d) mutualism
Cells grown in culture, outside the body are called ____ cell.s They have become an essential tool of cell and molecular biologists
A) in vitro B) in vivo C) live D) in culturo E) vivacious