BIONOM - Viruses (IB DP A2.3. HL)

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Across
  1. 3. a cycle in which viral genetic material incorporates into a host genome
  2. 4. a process needed for viral genetic material to stay in the host's DNA
  3. 6. a 'reverse' enzyme needed by retroviruses to make a DNA in a host cell
  4. 8. process of building a virus of its components
  5. 10. a feature of virus looks specifically different than in cells
  6. 12. a protein-made coat of a virus
  7. 13. diversity in genes which promotes fast evolution
  8. 14. a virus which destroys host cell and propagates aggressively
  9. 15. additional coating of a virus made of remains of a host's plasma membrane
  10. 17. thousand picometers
  11. 19. a virus which uses RNA as a genetic material which is transcribed into DNA in a host
  12. 20. destruction of a host cell caused by the virus
  13. 21. not only one (as an evolutionary origin of viruses)
  14. 22. set of specific chemical reactions missing in viruses
  15. 23. a hypothesis assuming that viruses come from cells which gradually lost many components
Down
  1. 1. a dormant virus staying in bacterial DNA
  2. 2. the time period which determines the evolutionary rate
  3. 5. a sequence in eukaryotic DNA which behaves as a retrovirus
  4. 7. a cycle in which viruses reproduce by destroying host cells and spreading to other cells
  5. 9. bacteria-infecting virus
  6. 11. a hypothesis assuming that viruses originate from taken and modified cell components
  7. 16. an organisms which uses another organism for resources and/or habitat
  8. 18. a cell in which a parasite settles