Chp. 24

  1. Virus
    A nonliving particle made up of nucleic acid and a protein coat or nucleic acid and a lipid-protein coat
  2. Capsid
    A protein coat
  3. Envelope
    Bilipid membrane that surrounds the capsid
  4. Provirus
    Inserted viral DNA
  5. Retroviruses
    Contains the enzyme reverse transcriptase in addition to RNA
  6. Reverse Transcriptase
    Uses RNA as a template to make DNA, which then inserts into the host cell's genome
  7. Bacteriophages
    Viruses that infect bacteria
  8. Lytic Cycle
    A virus that invades a host cell, produces new viruses, and ruptures the host cell when releasing newly formed viruses
  9. Virulent
    Viruses that reproduce only by the lytic cycle
  10. Lysogenic Cycle
    Allows viruses to hide in their host cell for days, months, or years
  11. Temperate Virus
    A virus whose replication includes the lysogenic cycle
  12. Prophage
    Phage DNA that is integrated into a specific site of the host cell's chromosome
  13. Vector
    An intermediate host that transfers a pathogen or a parasite to another organism
  14. Protease Inhibitors
    Class of drugs that block the synthesis of new viral capsids
  15. Oncogenes
    Genes that cause cancer by blocking the normal controls on cell reproduction
  16. Proto-Oncogene
    Controls cell growth
  17. Emerging Diseases
    Illnesses caused by new or reappearing infectious agents that typically exist in animal populations-often in isolated habitats-and can infect humans who interact with these animals
  18. Inactivated Virus
    Not able to replicate in a host
  19. Attenuated Virus
    A weakened form of the virus that cannot cause disease
  20. Viroids
    The smallest known particles that are able to replicate
  21. Prions
    Infectious protein particles that do not have a genome
Card Set
Chp. 24
Viruses Voc