18. Viruses, Viroids, & Prions

Which of the following best explains why some viruses appear to disappear and then re-emerge in the host at a later time?

Which statement best describes how a virus replicates?

When a virus mutates, which of the following characteristics does it exhibit?

Members of the Adenoviridae family cause which of the following diseases?

Which of the following viruses has the longest multiplication cycle?

Which process is primarily responsible for the sudden emergence of new pandemic influenza virus strains?

Which of the following characteristics determine a virus's host range?

Which of the following contributes to the high level of variability in the influenza virus?

All of the following pertain to virus envelopes except they:

A virus's ability to infect an animal cell depends primarily upon the:

Which of the following statements correctly describes viruses?

Which of the following is a true statement about viruses?

If a virus attacks a cell, which of the following is most likely to occur first?

Based on a typical diagram showing HIV infecting a host cell, which conclusion is best supported?

Which viral replicative cycle involves integration of the viral genome into the host cell's genome?