The addictive substance in tobacco is
a) tar
b) ddt
c) epinephrine
d) nicotine

Which of the following is characteristic of the lytic cycle? a) viral dna is incorporated into the host genome. b) the viral genome replicates without destroying the host. c) a large number of phages are released at a time. d) the virus—host relationship usually lasts for generations.

Which of the following human diseases is caused by a virus that requires reverse transcriptase to transcribe its genome inside the host cell? a) herpesb) aidsc) smallpoxd) influenza

Aclient is scheduled for a diagnostic examination. what will the nurse do first?