Exam 13: Viruses, Viroids and Prions

What part of the

Plant viruses enter the host plant via

The changes that occur in virally-infected cells are characteristic for a particular virus and are referred to as the

Using phages to treat a bacterial infection is an interesting idea because

A lysogenic cell contains viral DNA, a prophage, integrated into the host chromosome.

The phenomenon responsible for the ability of Corynebacterium diphtherium to produce the virulent toxin responsible for the devastating effects of diphtheria is called

Why is it not surprising that AIDS patients frequently suffer a viral-induced tumor?

The RNA phages contain only a single positive-sense strand of RNA.

The best known chronic infection involves

RNA phages usually contain

Completed filamentous phages are often found in the cytoplasm of infected bacteria.

Once inside the host cell, phage DNA

Transduction often involves defective virus.

In the replication of phage containing positive-sense DNA,

Retroviruses are unique in that they

The restriction-modification system always has two genes involved, the cutting enzyme and the methylating enzyme.

Which is a filamentous phage?

Would you expect the number of virions to be the same if you measured them by the plaque assay or by counting using the electron microscope? Why?

The nucleocapsid is composed of

Viruses are commonly referred to by their _________ name.