CELLS

2. The control center of a cell
3. everything is made up of...
5. the unified and widely accepted theory of how organelles arose in organisms, differing prokaryotic organisms from eukaryotic organisms. This ancestor probably resembled a bacteria, or prokaryote with a single strand of DNA surrounded by a plasma membrane.
6. This is also known as the plasma membrane
7. a single-celled organism of the kingdom Protista
8. organism that possesses a clearly defined nucleus. The eukaryotic cell has a nuclear membrane that surrounds the nucleus
9. single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles.
11. hairlike organelles
13. jelly-like fluid that fills a cell
14. This is known as storage for the cell
15. This is also known as the cell membrane
16. Powerhouse of the cell
19. structures inside the cell
20. lipids whose molecule has a hydrophilic "head" containing a phosphate group, and two hydrophobic "tails" derived from fatty acids, joined by an alcohol residue.

1. only lets certain materials in and out of the cell.
4. self-regulating process by which biological systems tend to maintain stability
10. Where photosynthesis takes place, Light energy is converted into chemical energy
12. Site of protein synthesis
17. Keeps the shape of the cell and protects against foreign substances entering into the cell
18. Genetic material