Chapter 13 Flashcards
(23 cards)
Which of the following is true regarding viruses?
they are not composed of cells
Which one of the following is NOT a morphological type of virus?
polymorphic
Viruses that infect bacteria are called..
bacteriophages
The suffix-viridae is used for virus
family names
Capsids are composed of protein subunits known as
capsomeres
What is/are the most common methods used to identify viruses?
serological methods
All of the following can be used to culture animal viruses EXCEPT
glucose broth
Cell deteriorations due to viral infections are known as
cytopathic effects
Continuous cell lines
are sometimes called immortal cell lines
the plaque method can be used to
grown bacteriophages
Which one of the following is an example of a persistent viral infection in humans?
HIV/AIDS
Which one of the following is an example of a latent viral infection in humans?
Shingles
The enzyme that uses viral RNA as a template to produce complementary double-stranded DNA is
reverse transcriptase
Viruses that infect and lyse cancer cells are called
oncolytic viruses
Viruses capable of inducing tumors in animals are called
oncogenic viruses
Which part of the genome is affected by cancer-causing alterations to cellular DNA?
oncogenes
Sarcoma is cancer of ______ tissue.
connective
The ability of retroviruses to induce tumors is related to which enzyme?
reverse transcriptase
Which one of the following is NOT an effect of transformation?
cells lose their ability to divide
What percentage of cancers are known to be virus-induced?
10%
A viroid is a
naked, infectious piece of RNA
Scrapie is an example of a ____ disease found in sheep and caused by a prion
neurological
Prion diseases can be acquired via all of the following EXCEPT
inhalation
