Across
- 4. Composed of only one cell.
- 5. A bacterium, virus, or microorganism that causes disease.
- 6. So small as to visible only with a microscope.
- 7. One or more cells.
- 9. The smallest structural and functional unit of an organism (Living).
Down
- 1. The father of epidemiology.
- 2. Scientific tool used to see things that are not able to be seen with the naked eye.
- 3. Composed of more than one cell.
- 8. No cells.