Chapter 21

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Across
  1. 3. Type of infection in which a virus enters a cell makes copies of itself and causes the cell to burst.
  2. 4. Disease causing agents.
  3. 8. Particle made of proteins, nucleic acids, and sometimes lipids that can replicate only by infecting living cells.
  4. 9. Kind of virus that infects bacteria.
  5. 12. Unicellular organism that lacks a nucleus.
  6. 13. RNA virus that contains RNA as its genetic information.
Down
  1. 1. Protein coat surrounding a virus.
  2. 2. Type of asexual reproduction in which an organism replicates its DNA and divides in half, producing two identical daughter cells.
  3. 5. Bacteriophage DNA that is embedded in the bacterial host’s DNA.
  4. 6. A group of drugs used to block the growth and reproduction of bacterial pathogens.
  5. 7. Process in which some prokaryotes exchange genetic information.
  6. 8. Preparation of weakened or killed pathogens used to produce immunity to a disease
  7. 10. Structure produced by prokaryotes in unfavorable conditions; a thick internal wall that encloses the DNA and a portion of the cytoplasm.
  8. 11. Type of infection in which a virus embeds its DNA into the DNA of the host cell and is replicated along with the host cell’s DNA.