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SpacySmol SpacySmol
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6 years ago
The changes that occur in virally infected cells are characteristic for a particular virus and are referred to as the
 
  A. cytopathic effect.
  B. phenotypic effect.
  C. genotypic expression.
  D. cytology.


Cells taken from a tumor
 
  A. may be used to grow viruses.
  B. can be cultivated in vitro indefinitely.
  C. may be used to grow bacteriophages.
  D. divide 50 times and then die.
  E. may be used to grow viruses AND can be cultivated in vitro indefinitely.


Retroviruses are unique in that they
 
  A. replicate in nervous system cells.
  B. do not have a capsid.
  C. use RNA as a template to make DNA.
  D. use DNA as a template to make RNA.


Genetic exchange in segmented viruses that allows a zoonotic virus to infect humans is termed
 
  A. antigenic shift.
  B. hemagglutination.
  C. genetic reassortment.
  D. antigenic drift.


Diseases of short duration frequently followed by long-term immunity are referred to as
 
  A. intermittent infections.
  B. chronic infections.
  C. acute infections.
  D. persistent infections.
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lazerlazer
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SpacySmol Author
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6 years ago
Thank you for helping me throughout this difficult semester
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