People living in the northeastern United States are more at risk for exposure to which of the following rickettsias?
A) Rickettsia rickettsii
B) Rickettsia typhi
C) Ehrlichia chaffeensis
D) Orientia tsutsugamushi
E) Rickettsia prowazekii
C
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Which of the following best describes the type of bacteria found in your guts?
a They are less similar to that of your family than to people unrelated to you, and are not unique to you. b. They are less similar to that of your family than to people unrelated to you, but are still unique to you. c. They are more similar to that of your family than to people unrelated to you, and are not unique to you. d. They are more similar to that of your family than to people unrelated to you, but are still unique to you.
The recommended daily intake for fiber is approximately ——grams.
a. 5 b. 30 c. 100 d. 450
In some areas of the world where there are large numbers of pines, everything is covered in the spring with a yellow dust that turns out, upon examination, to be pine pollen. Why must conifers produce so much pollen, and why do we not see as much pollen
produced by a field of flowers? What will be an ideal response?
Lymphatic tissue closely associated with the bloodstream as well as lymphatic circulation is found in the:
A) spleen. B) bone marrow. C) intestine. D) tonsils. E) thymus.