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.

Biology & Microbiology

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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

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The combination of a virus's genetic material and protein is called the

a. capsid. b. virion. c. nucleocapsid. d. envelope. e. transfer RNA.

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What separates the strands of DNA in the polymerase chain reaction (PCR) technique?

A. Centrifuge B. Heat C. Restriction enzymes D. Helicase

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DNA replication is always

A) discontinuous. B) bidirectional. C) conservative. D) semiconservative. E) dispersive.

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