Sputum is obtained by
A.) swabbing the mouth to sample saliva.
B.) a clean catch urine sample.
C.) the patient coughing up mucus from the lower respiratory system.
D.) a spinal tap above the chest.
E.) a throat swab.
C.) the patient coughing up mucus from the lower respiratory system.
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Cross-bridges form between _____ and _____ during muscular contraction.
A. actin, myosin B. actin, tropomyosin C. myosin, troponin D. myosin, tropomyosin E. troponin, calmodulin
The combination of a virus's genetic material and protein is called the
a. capsid. b. virion. c. nucleocapsid. d. envelope. e. transfer RNA.
What separates the strands of DNA in the polymerase chain reaction (PCR) technique?
A. Centrifuge B. Heat C. Restriction enzymes D. Helicase
DNA replication is always
A) discontinuous. B) bidirectional. C) conservative. D) semiconservative. E) dispersive.