Across
- 2. are tiny living things that are found all around us and are too small to be seen by the naked eye.
- 5. occurs when germs enter the body, increase in number, and cause a reaction of the body
- 9. a particular abnormal condition that negatively affects the structure or function of all or part of an organism, and that is not immediately due to any external injury.
- 11. are ubiquitous, mostly free-living organisms often consisting of one biological cell.
- 13. study of all living organisms that are too small to be visible with the naked eye
- 16. most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain.
- 19. a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.
- 20. the scientific discipline concerned with the study of the biology of parasites and parasitic diseases, including the distribution, biochemistry, physiology, molecular biology, ecology, evolution and clinical aspects of parasites, including the host response to these agents.
Down
- 1. a sudden appearance of something, esp. of a disease or something else dangerous or unpleasant
- 3. the basic physical and functional unit of heredity.
- 4. organism that can be seen only through a microscope.
- 6. defined as an organism causing disease to its host, with the severity of the disease symptoms referred to as virulence.
- 7. the ability not to be affected by something, especially adversely.
- 8. any chemical substance that causes a change in an organism's physiology or psychology when consumed.
- 10. An organism that lives on or in a host organism and gets its food from or at the expense of its host
- 12. means all living beings except humans
- 14. an individual living thing that carries on the activities of life by means of organs which have separate functions but are dependent on each other
- 15. the systematic study of the structure and behavior of the physical and natural world through observation, experimentation, and the testing of theories against the evidence obtained.
- 17. the scientific study of life
- 18. change in the heritable characteristics of biological populations over successive generations