7- 2 Eukaryotic Cell Structure........................................................... NAME ____________________________

1. In some respects, the _________________________________ is like a factory.

2. These structures are known as "little organs." _____________________________.

3. Cell biologists divide the eukaryotic cell into two major parts the
________________________ and the _____________________________________________.

4. See Figure 7-7. What part of the nucleus (with pointer) contains a small, dense region? ______________________________________________

5. The nucleus is surrounded by a ____________________________ composed of two membranes.

6. When a cell divides, however; __________________ condenses to form __________________.

7. _________________________ are small particles of RNA and protein found throughout the cytoplasm.

8. The portion of the ___________________ involved in the synthesis of proteins is called ____________ ______________________________ or ________________________________________.

9. See Figure 7-9. What does the Golgi apparatus do to proteins? _______________________________________________________________

10. The Golgi apparatus is somewhat like a ___________________________, where the finishing touches are put on proteins before they are ready to leave the "factory."

11. One function of __________________________ is the digestion, or breakdown, of lipids, carbohydrates, and proteins into ________________________________ that can be used by the rest of the cell.

12. What kind of vacuole does the paramecium in Figure 7-10 contain? ____________________________

13. Most cells get energy in one of two ways ---- from ________________________ or from the ___________.

14. ___________________________ are organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use.

15. ______________________________ are the biological equivalents of solar power plants.

16. Unlike other organelles that contain no DNA, ________________________ and ____________________ contain their own genetic information in the form of small DNA molecules.

17. Eukaryotic cells have a structure --- the _____________________________ --- that helps support the cell.

18. ___________________________ assembly and disassembly is responsible for the cytoplasmic movements that allow cells, such amoebas, to crawl along surfaces.

19. What plays a critical role in maintaining a cell's shape? ________________________

20. _____________________ are located near the nucleus and help to organize cell division. _____________________ are not found in plant cells.