Across
- 1. theory: Diseases are caused by microorganisms within the body.
- 5. A submicroscopic particle that consists of a protein coat and genetic material.
- 6. disease: A long-term condition that may not have a cure but can often be controlled.
- 7. The body’s natural defense against infection.
- 8. A solution that contains a dead or weakened form of a pathogen used to help the body develop antibodies.,
- 9. A chemical substance used to kill or slow the growth of bacteria.
- 10. A virus, bacteria, or other organisms that causes disease.
Down
- 2. An organism that is so small it can only be seen with a microscope.
- 3. Activities that promote cleanliness and good health.
- 4. disease: An illness caused by a pathogen that is spread from person to person.