The component(s) of a virus that is/are extended from the envelope for attachment is/are the:
- nucleic acid
- viral whiskers
Which of the following does a virus lack? Select all that apply.
- metabolic processes
- nucleic acid
The envelope of a virus is derived from the host’s
- nucleic acids
- membrane structures
In naming viruses, the family name ends with ________ and genus name ends with _________.
- −virus; −viridae
- −viridae; −virus
- −virion; virus
- −virus; virion
What is another name for a nonenveloped virus?
- enveloped virus
- naked virus
- latent virus
Which of the following leads to the destruction of the host cells?
- lysogenic cycle
- lytic cycle
- temperate phage
A virus obtains its envelope during which of the following phases?
Which of the following components is brought into a cell by HIV?
- a DNA-dependent DNA polymerase
- RNA polymerase
- reverse transcriptase
A positive-strand RNA virus:
- must first be converted to a mRNA before it can be translated.
- can be used directly to translate viral proteins.
- will be degraded by host enzymes.
- is not recognized by host ribosomes.
What is the name for the transfer of genetic information from one bacterium to another bacterium by a phage?
Which of the followings cannot be used to culture viruses?
- tissue culture
- liquid medium only
- animal host
Which of the following tests can be used to detect the presence of a specific virus?
- all of the above
Which of the following is NOT a cytopathic effect?
- cell fusion
- mononucleated cell
- inclusion bodies
Which of these infectious agents do not have nucleic acid?
Which of the following is true of prions?
- They can be inactivated by boiling at 100 °C.
- They contain a capsid.
- They are a rogue form of protein, PrP.
- They can be reliably inactivated by an autoclave.