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

Biology & Microbiology

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 Shiga toxin-producing E. coli characteristics include all of the following except that it

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________ are chemical agents that are applied directly to exposed body surfaces, wounds, and surgical incisions.

A) Sterilizers B) Antiseptics C) Disinfectants D) Sanitizers

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Most of Europe is in the ________ biome.

A. tropical deciduous forest B. temperate deciduous forest C. cold desert D. taiga E. tundra

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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.

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