Across
- 2. Able to spread disease from one organism to another.
- 5. A living cell that a virus infects and uses to survive and reproduce.
- 6. The protein shell that surrounds and protects a virus’s genetic material.
- 7. A substance that helps the body learn to fight a disease before you get it.
- 8. A fatty outer layer found on some viruses that helps them enter host cells.
- 9. The parts of a cell (like ribosomes) that a virus uses to build new viruses.
Down
- 1. A medicine that helps stop viruses from infecting cells or reproducing.
- 2. The body’s defense system that fights off infections and diseases.
- 3. To make more copies of itself (viruses must use a host cell to do this).
- 4. DNA or RNA that carries the instructions for making and controlling an organism or virus.