Cells!

1. A cell organelle that contains many ribosomes on its outer surface and makes proteins the cell needs
5. The nucleus and organelles bounded by a thick and rigid cell wall
7. The jelly-like liquid that fills the inside of a cell
8. the main protection barrier that surrounds a plant cell
9. Cells with membrane-bound organelles and a nucleus
12. A thin biological layer that contains the cytoplasm and all organelles of the cell
15. The material contained within the nucleus of a cell
18. An organelle that modifies, packages and sorts proteins sent from the endoplasmic reticulum
19. An organelle in plant cells used to store food and water
20. The main food producer for plant cells
21. A cell organelle that makes other substances that the cell needs, such as lipids (fats) and carbohydrates (sugars)

1. Tiny molecules in cells that help the cell make proteins
2. Makes ribosomes for the cell
3. Minute hairlike organelles, identical in structure to flagella, that line the surfaces of certain cells and beat in rhythmic waves
4. The process in cell division by which the nucleus divides
6. The basic principle of modern biology
10. Cells without membrane-bound organelles or a nucleus
11. The nucleus and organelles bounded by a very flexible membrane
13. The double membrane layer that separates the contents of the nucleus from the rest of the cell.
14. The organelle in cells that stores DNA and helps the cell make proteins
16. the powerhouse of the cell
17. The cell's digestive system