Glencoe Biology Chapter 18 Crossword

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Across
  1. 2. Covers the cell wall in prokaryotes.
  2. 4. A tiny, nonliving particle that invades and then reproduces inside a living cell.
  3. 5. In bacteria, the direct transfer of DNA between two cells that are temporarily joined.
  4. 8. ________ cycle cycle of viral infection; results in replication of virus and cell destruction
  5. 9. A thick-walled protective spore that forms inside a bacterial cell and resists harsh conditions.
  6. 11. protein particles that cause disease
  7. 12. A dense region of DNA in a prokaryotic cell.
  8. 13. protein coat surrounding a virus
Down
  1. 1. virus that contains RNA as its genetic information
  2. 3. ________ fission A form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
  3. 6. single-celled organisms that lack a nucleus; prokaryotes
  4. 7. ________ cycle replicates the phage genome without destroying the host
  5. 10. A short, thick hair-like protein structure that allows a bacterium to attach to other bacteria and surfaces.