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