microrganisms

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Across
  1. 1. any organism that causes disease
  2. 4. an organism which can carry a disease or parasyte to another animal or plant
  3. 5. process by which milk is preserved
  4. 8. unicellular animal which causes human diseases
  5. 9. substance produced by internal defensive mechanisms to fight human bacterial diseases.
Down
  1. 2. the green substance floating at the surface of water bodies
  2. 3. the process used for the preparation of curd and alcohol
  3. 5. the bacteria which are good for health
  4. 6. organisms that possess nucleic acid but lack the replicating machinery.
  5. 7. a biological preparation that provides active acquired immunity to a disease.