The different major groups of viruses (families) differ in: host range. the type of genetic material they have. virion size. genome size. presence or absence of an envelope.

The International Committee on Taxonomy of Viruses (ICTV) has established nomenclature rules for viruses. Which of the following would be considered a viral family name? Rotavirus Adenovirus Poxviridae Herpevirales

Which of the following components of a virus is NOT encoded by its own genome? O capsid of HIV O lipid bilayer of HIV envelope O spike glycoproteins of HIV envelope O anchoring structures of bacteriophage

Which one of the following is not true for virus, obligate intracellular parasites?     Viruses cannot generate energy outside of cells     Viruses cannot synthesize proteins outside of cells     Enveloped viruses require host cell membrane to obtain their envelopes     Viruses must degrade host cell DNA in order to obtain nucleotides

During infection of a cell by Coronavirus, the N protein is:     found on the outer surface of the virus particles     synthesized on bound ribosomes on the rough ER     synthesized in the cytosol on free ribosomes     part of the RNA-dependent RNA polymerase     required for binding of the virus particle to cells

TRUE or FALSE: All icosahedral viruses are enveloped. - Bacteriophages containing icosahedral heads attached to helical tails have this type of capsid structure:   Modified Complex Icosahelical Helicosahedron

All viral genomes contain nucleic acid, either DNA or RNA but not both. Viral replication is the formation of biological viruses during the infection process in the target host cell. Viruses must first enter the host cell before viral replication can occur. After gaining entry into a cell, the viral genome has to be first replicated using either the host DNA polymerase or RNA polymerase You are studying two viruses: Virus A is an enveloped RNA virus Virus B is non-enveloped DNA virus Which of the above viruses is likely to have the lowest mutation rate in the host cell? O Virus A because it uses the host RNA polymerase which has lower error rate than DNA polymerase. O Virus A because it uses the host DNA polymerase which has lower error rate than RNA polymerase. O Virus B because it uses the host DNA polymerase which has lower error rate than RNA polymerase. O Virus B because it uses the host RNA polymerase which has lower error rate than DNA polymerase.

Which of the following is not a characteristic of viruses that makes them difficult for drug development? They have a very simple structure. They are smaller than the host cells. They use the host's machinery for replication.

Describe the processes used by viruses to enter cells and replicate.

The lytic cycle of a bacteriophage can be characterized by A large number of phages are released at a time. The virus-host relationship usually lasts for generations. The viral genome replicates without destroying the host. Viral DNA is incorporated into the host genome.