Across
- 5. An organism such as an insect, that transmits a pathogen
- 10. Organisms that are more complex than bacteria, but cannot make their own food
- 12. The smallest and the simplest pathogens
- 13. A preparation of dead or weakened pathogens that is introduced into the body to cause an immune response.
- 15. A highly communicable viral disease characterized by fever, chills, fatigue, headache, muscle aches, and respiratory symptoms
- 16. One-celled organisms that are more complex than bacteria
- 18. Cleanliness
- 19. Substances that send the immune system into action
- 20. Germs that cause diseases
Down
- 1. The body's response to injuries or disease, resulting in a condition of swelling pain heat, and redness
- 2. Single one-celled organisms
- 3. Any condition that interferes with the proper functioning of the body of mind.
- 4. A viral disease characterized by an inflammation of the liver and yellowing of the skin and the white of the eyes
- 6. A bacterial disease that usually affects the lungs
- 7. Proteins that attach to antigens, keeping them from harming the body
- 8. The ability to resist the pathogens that cause a particular disease
- 9. A serious inflammation of the lungs
- 11. A condition that happens when pathogens enter the body, multiply and cause harm.
- 14. Able to spread to others by direct or indirect contact
- 17. Organisms that are so small they can only be seen through a microscope