Across
- 5. the efficiency of the body's cardiovascular system in absorbing and transporting oxygen.
- 6. washing something by hand rather than using a machine.
- 7. A group of very small bacteria that includes the causative agents
- 8. A infective agent that typically consists of a nucleic acid molecule
- 10. requires an absence of free oxygen.
- 14. infections that occur more often or are more severe in people with weakened immune systems
- 15. A microscopic organism
- 16. A bad microorganism
Down
- 1. the absence of bacteria
- 2. A bacterium with a rigid spiral structure
- 3. A spore-producing organisms feeding on organic matter
- 4. A small single-celled organism that is everywhere
- 9. A single-celled microscopic animal
- 11. infections acquired during the process of receiving health care
- 12. A rough spherical bacterium
- 13. A good microorganism