Across
- 5. an organism that is able to capture energy from sunlight or chemicals and use it to produce its own food
- 6. an action or change in behavior that occurs as a result of a stimulus
- 7. a characteristic or trait, such as fur, that the common ancestor of a group had and passed on to its descendants
- 10. an organism that cannot make its own food and gets food by consuming other living things
- 12. a reproductive process that involves two parents that combine their genetic material to produce a new organism which differs from both parents
- 13. a Domain whose name comes from the Greek word for "Ancient"
- 16. a classification grouping that consists of a number of similar, closely related species
- 17. a Kingdom within Domain Eukarya composed of organisms which may be either multicellular or unicellular, either autotrophs or heterotrophs
- 18. the classification system in which each organism is given a unique, two-part scientific name indicating its genus and species
- 20. any change or signal in the environment that can make an organism react in some way
- 21. the combination of chemical reactions through which an organism builds up or breaks down materials
- 24. the process by which unrelated organism evolve similar characteristics
- 25. a Kingdom within Domain Eukarya composed entirely of multicellular heterotrophs whose cells do NOT have cell walls
- 27. the process of grouping things based on their similarities
- 28. an experiment in which only one variable is manipulated at a time
- 29. the scientific study of how living things are classified
- 30. a Domain composed of unicellular prokaryotes, that can be autotrophs or heterotrophs but do NOT live in extreme environments at the bottom of the ocean
Down
- 1. the condition in which an organism's internal environment is kept stable in spite of changes in the external environment
- 2. a unicellular organism that lacks a nucleus and some other cell structures
- 3. consisting of many cells
- 4. a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce
- 8. the mistaken idea that living things arise from nonliving sources
- 9. a Kingdom within Domain Eukarya composed entirely of multicellular autotrophs
- 11. the process of change that occurs during an organism's life to produce a more complex organism
- 14. the basic unit of structure and function in living things
- 15. an organism whose cells contain a nucleus
- 19. a reproductive process that involves only one parent and produces offspring that are genetically identical to the parent
- 22. a living thing
- 23. made of a single cell
- 26. a Kingdom within Domain Eukarya composed of heterotrophs, whose cells have cell walls