Life and Cells

1. The fourth level of classification
8. A domain with unicellular organisms that live in extreme temperatures
9. A cell with no nucleus
10. The sixth level of classification
11. The basic unit of structure and function in living things
12. The eighth level of classification
15. An organism that produces its own energy
17. A domain with the 'leftover' organisms that do not fit into the archaea, bacteria, or eukarya category
19. A cell with a nucleus
20. The second level of classification
22. The first level of classification
23. A domain with unicellular, prokaryotic organisms
24. An organism becomes more complex
25. The process of maintaining stable internal conditions
26. Adding more cells

2. The idea that life can arise from nothing
3. Describes an organism with many cells
4. A domain with all eukaryotes
5. An organelle that directs all cell functions and contains the DNA
6. The seventh level of classification
7. Describes an organism with only one cell
13. The third level of classification
14. An organism that does not produce its own energy and has to eat other organisms
16. A scientist who disproved spontaneous generation by experimenting with meat and maggots
18. The fifth level of classification
21. A change in the environment that causes a response from an organism