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Across
  1. 2. - Any eukaryotic protist of the phylum or subkingdom Protozoa.
  2. 4. - skin, respiratory tract, gastrointestinal tract, urogenital, conjunctiva
  3. 5. - Disease transmission that occurs when a susceptible host touches an infected individual or is exposed to their body fluids.
  4. 9. - A single-celled, prokaryotic microorganism.
  5. 10. - Disease transmission that occurs when a susceptible host inhales infected particles, touches an infected object, or is bitten by an infected insect.
  6. 11. - Specific immune defense mechanisms. This form of immunity is acquired over a lifetime and uses antibodies to respond to specific antigens. There are two forms: Active immunity and Passive immunity
  7. 14. - people, animals, the environment
  8. 15. - A large, eukaryotic, multicellular, parasitic worm, such as a tapeworm, liver fluke, ascarid, or leech.
  9. 16. - Any of various infectious proteins that are abnormal forms of normal cellular proteins. Prions proliferate by inducing normal proteins to convert to the abnormal form that causes diseases, such as mad cow disease, Creutzfeldt-Jakob disease, and kuru.
Down
  1. 1. - Direct, Indirect
  2. 3. - skin, respiratory tract, gastrointestinal tract, urogenital, conjunctiva
  3. 6. - children, elderly, people with weakened immune systems, unimmunized people
  4. 7. - Saprophytic and parasitic spore-producing eukaryotic organisms that lack chlorophyll, such as molds, rusts, mildews, smuts, mushrooms, and yeasts.
  5. 8. - A substance used to stimulate an immune response with the goal of creating antibodies and providing immunity to specific infections.
  6. 11. -Prions, Bacteria, Helminths, Fungi, Protists, Viruses
  7. 12. - Non-specific immune defense mechanisms that we are born with. These mechanisms work to keep anything outside of us from coming in.
  8. 13. - Any of a large group of nonliving, submicroscopic infective agents that typically comprise an RNA or DNA core of genetic material surrounded by a protein coat. Viruses are not cellular and require a host in which to replicate. They cause various important diseases in all forms of life.