1				2		3
		4
															5
							6
					7
								8
	9
		10		11
						12				13
													14
												15
16
													17
18

Across 4. General term for proteins that support the cell and make possible cell movements. 6. Substances outside the cell 7. Living material surrounding the nucleus of a cell; contains organelles. 9. Membrane-bounded sac that pinches off from the Golgi apparatus and releases its contents to the cell's exterior. (2 Words) 14. Membrane-bounded sac containing digestive enzymes. 15. Membrane without ribosomes; site of lipid synthesis (2 Words) 17. Contains chromosomes (DNA) which determine the structure and function of the cell. 18. Closely packed stacks of membranes; collects, modifies, packages, and distributes protein and lipid molecules. (2 Words)

Down 1. Protein fibrils that are smaller than microtubules and larger than microfilaments; provide mechanical support. (2 Words) 2. Contains the cell's genetic material and controls the cell. 3. Specialized extensions of the cell membrane that increase the surface area of cells; important in absorption of materials. 4. Projections that move materials embedded in mucus. 5. A long projection that functions to move a sperm cell. 8. General term for specialized structure within cells which performs specific functions. 10. Substances inside the cell 11. Rod-shaped organelles with inner and outer membranes; major site of ATP production. 12. The cell membrane consists of a double layer of ______ molecules. 13. Encloses the cytoplasm. (2 Words) 16. Site of protein synthesis. (2 Words)