The most common vector-borne disease in North America and Europe transmitted by the bite of Ixodes ticks is caused by:
a. Leptospira interrogans.
b. Borrelia burgdorferi.
c. Treponema carateum.
d. Rickettsia rickettsii.
B
Although at least 10 different Borrelia species have been currently found within the Borrelia burgdorferi sensu lato complex, only Borrelia burgdorferi sensu stricto (the strict sense of Bor-relia burgdorferi), as well as Borrelia garinii, Borrelia afzelii, Borrelia spielmanii, Borrelia lu-sitaniae, and Borrelia valaisiana, are agents of Lyme disease and are transmitted by the bite of Ixodes ticks. Lyme disease is the most common vector-borne disease in North America and Eu-rope and is an emerging problem in northern Asia.
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Duplicated chromosomes linked together at
their centromeres at the beginning of meiosis are appropriately called what kind of chromatids? a. mother b. daughter c. sister d. homologous e. haploid
Which was the last continent to be inhabited by monkeys?
a. Asia b. Africa c. Europe d. Australia e. South America
The products of mitosis are
a. one nucleus containing twice as much DNA as the parent nucleus. b. two genetically identical cells. c. four nuclei containing half as much DNA as the parent nucleus. d. four genetically identical nuclei. e. two genetically identical nuclei.
What portion of the brain provides reasoning to keep us from acting out strong feelings?
A. brain stem B. limbic system C. reticular activating system D. pineal gland