Diseases

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Across
  1. 3. an organism that lives in a host
  2. 5. less than _____ percent of bacteria that are harmful
  3. 7. and invasion and multiplication of microorganisms
  4. 11. a sign of a disease
  5. 13. how bacterial infections are treated
  6. 16. an overreaction of the immune system to something harmless
  7. 17. control activities of cells
  8. 18. a disorder of structure or function
Down
  1. 1. a microorganism that causes disease
  2. 2. a substance that helps the body build up resistance to viral infections
  3. 4. an organism that absorbs nutrients from its environment
  4. 6. characteristics or behaviors that can lead to noninfectious diseases
  5. 8. most noninfectious diseases cannot be cured but can be ______
  6. 9. exposure to these is a risk factor
  7. 10. to make less severe
  8. 12. the process of converting food into energy in the body
  9. 14. a disease that is easily spread
  10. 15. a microorganism that can cause disease but is not living