Exam 13: Viruses, Viroids, and Prions

Nontoxic strains of Vibrio cholerae can become toxic when they are in the human intestine with toxic strains of bacteria. This suggests that the toxin genes are acquired by

Which of the following would be the first step in biosynthesis of a virus with a - strand of RNA?

Which one of the following steps does not occur during multiplication of a Rhabdovirus?

A persistent infection is an infection in which

Approximately how many virus particles could fit along a 1 millimeter line?

Some viruses, such as Human Herpes Virus 1, infect a cell without causing symptoms; these are called

Generally, in a DNA- containing virus infection, the host animal cell supplies all of the following Except

Figure 13.1 -In Figure 13.1, the structures illustrated are composed of

Viruses that have reverse transcriptase are in the

Lysogeny can result in all of the following except

Continuous cell lines differ from primary cell lines in that

Bacteriophages derive all of the following from the host cell except

Which one of the following steps does not occur during multiplication of a Picornavirus?

A viroid is

An example of a latent viral infection is

Which of the following statements is not true?

Which of the following is not true about viruses?

In which of the following ways do viruses differ from bacteria?

A clear area against a confluent "lawn" of bacteria is called a

The following steps occur during multiplication of Retroviruses. What is the fourth step?