In the United States, every clinical and research institution requires that workers be protected from ________ that is contracted almost exclusively from handling patient specimens (rather than from known exposure or accidents)
A) anthrax
B) hepatitis B
C) drug-resistant mycobacteria
D) influenza
Answer: B
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An infection of the pharynx that is normally called sore throat, whose presentation includes erythematous and swollen tissue and which is characterized by inflammatory exudates, vesicles, and mucosal ulceration or by nasopharyngeal lymphoid hyperplasia, is:
a. laryngitis. b. epiglottitis. c. pharyngitis. d. Vincent angina.
Methanogens can live only in ________ environments.
A. microaerophilic B. aerobic C. anaerobic D. All of the choices are correct.
The process by which new species are created from old species is achieved through which of the following?
a. energy consumption b. evolution c. thermoregulation d. mutations
Chromatin is defined as ________
A) hybrid molecules of DNA and RNA B) a catalytic molecule with a protein component and an RNA component C) supercoiled loops of bacterial DNA D) DNA complexed with protein E) genetic material found only in mitochondria