Most of the oxygen in the blood is transported by _____.
a) platelets
b) serum
c) plasma
d) the protein hemoglobin
e) leukocytes
Ans: d) the protein hemoglobin
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Shiga toxin-producing E. coli characteristics include all of the following except that it
A. is transmitted by ingestion of contaminated, undercooked food, especially hamburger. B. in some cases, leads to the development of hemolytic uremic syndrome (HUS) with possible kidney failure C. causes a bloody diarrhea. D. has a reservoir inside of cattle intestines. E. only causes occupational illness in people who work with animals.
________ are chemical agents that are applied directly to exposed body surfaces, wounds, and surgical incisions.
A) Sterilizers B) Antiseptics C) Disinfectants D) Sanitizers
Most of Europe is in the ________ biome.
A. tropical deciduous forest B. temperate deciduous forest C. cold desert D. taiga E. tundra
Characteristics of Treponema pallidum, the bacterium which causes syphilis, include all except
A) vertical transmission to a fetus during any stage of pregnancy. B) ability to avoid immune detection by varying the few antigens it carries on its surface. C) not treatable with any of type antibiotic. D) rapid invasion of host tissues from the initial infection site. E) Gram-negative spirochete.