Cells

4. An organelle that modifies, packages and sorts proteins sent from the endoplasmic reticulum
5. A thin biological layer that contains the cytoplasm and all organelles of the cell
8. A cell organelle that contains many ribosomes on its outer surface and makes proteins the cell needs
10. The powerhouse of the cell
12. The nucleus and organelles bounded by a very flexible membrane
13. Minute hairlike organelles, identical in structure to flagella, that line the surfaces of certain cells and beat in rhythmic waves
15. The nucleus and organelles bounded by a thick and rigid cell wall
16. The basic principle of modern biology
18. The cell's digestive system
22. The jelly-like liquid that fills the inside of a cell

1. The main food producer for plant cells
2. The double membrane layer that separates the contents of the nucleus from the rest of the cell
3. The material contained within the nucleus of a cell
6. The organelle in cells that stores DNA and helps the cell make proteins
7. Cells without membrane-bound organelles or a nucleus
9. Cells with membrane-bound organelles and a nucleus
11. The main protection barrier that surrounds a plant cell
14. An organelle in plant cells used to store food and water
17. Tiny molecules in cells that help the cell make proteins
19. A cell organelle that makes other substances that the cell needs, such as lipids (fats) and carbohydrates (sugars)
20. Makes ribosomes for the cell
21. The process in cell division by which the nucleus divides