General Virology

A structural component that is found in ALL virions is:

• Tail fibers

• Capsid

• DNA

• envelope

A protein shell which surrounds and protects the viral genome is a

• spike

• capsid

• nucleocapsid

• virion

A lipid membrane which surrounds some virions is a(n)

• envelope

• capsid

• nucleocapsid

• glycoprotein spike

Which of the following infectious agents do not have nucleic acid (DNA or RNA)?

•  Protozoa

• Prions

• Bacteria

• Viruses

Which bacteriophage replication cycle does not kill the host cell?

• lytic cycle

• lysogenic cycle

• latent cycle

• chronic cycle

Which bacteriophage replication cycle results in integration (insertion) of the phage DNA into the bacterial chromosome?

• lytic cycle

• lysogenic cycle

• cytophathic cycle

• latent cycle

Which of the following is true regarding viral spikes? (choose all that apply)

• they are often made of protein and carbohydrates

• they are located inside the capsid

• they may act as antigens to trigger an immune response

• they may help the virion attach to host cells

Which are real examples of possible viral capsid structures? (select all that apply)

• lysical

• helical

• polyhedral

• complex

• proglottical

Which of the following is TRUE regarding growing viruses? (choose all that apply)

• they must be grown in living cells

• they can be grown in beef broth media

• some can be grown in cell culture

• some can be grown in eggs

If a virus growing in cell culture kills an area of cells, this area of dead cells/loss of cells is called a

• lysogenic focus

• cyst

• colony

• plaque