A cleaning solution used on the venipuncture site to avoid skin contamination of the blood sample is called a(n):
a. surfactant.
b. disinfectant.
c. biocide.
d. antiseptic.
D
A disinfectant is used on inanimate objects to kill bacteria that are potentially harmful to humans, whereas an antiseptic is a disinfectant that is generally used on living tissue such as skin.
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Thymine dimers are caused by
A) X-rays. B) active oxygen species. C) a mutagen such as ethylmethane sulfonate (EMS). D) depurination. E) UV light.
Bacterial infections are generally treated with ________
Fill in the blank(s) with correct word
Effects of deforestation illustrated by the Hubbard Brooks Experimental Forest include all of the
following except:a. soil erosion. b. leaching of essential nutrient minerals. c. decreased soil fertility. d. higher summer temperatures in previously shady streams. e. acid deposition.
A ________ can contain DNA or RNA as its genetic material, but not both.
Fill in the blank(s) with the appropriate word(s).