Across
- 4. A substance which in introduced to the body to stimulate the body's immune response.
- 5. An organism that lives in or on an organism of another species.
- 9. A scientist who studies microscopic life forms and processes.
- 11. Method of transmission by consuming faecal particles.
- 14. The invasion and multiplication of pathogenic microbes.
Down
- 1. Washing this part of your body can prevent transmission of diseases.
- 2. The longest recorded tapeworm.
- 3. Single celled micro-organism which can be both helpful and harmful.
- 6. Chemicals which kill or inhibit the growth of bacteria.
- 7. A beauty procedure which uses the toxin produced by the bacterium Clostridium botulinum.
- 8. Harmful micro-organism which invades cells to reproduce.
- 10. A micro-organism with the potential to cause disease.
- 12. Method of transmission by coughs and sneezes.
- 13. The percentage of diseases transmitted by touch.