Across
- 4. A simple cell and it has no nucleus
- 5. Microbes that cause infectious diseases
- 8. An organism that is too small to be seen with the naked eye.
- 10. system It's the bod's defense against diseases
Down
- 1. Some pathogens are carried by an insect
- 2. Said to be present in the body when a part of it doesn't function normally or properly
- 3. A vaccine is injected into the body
- 6. Made of nucleic acid (DNA, it is not alive
- 7. Medication used to kill diseases
- 9. An individual animal, plant or single-celled