Across
- 3. Makes ribosomes for the cell
- 6. Tiny molecules in cells that help the cell make proteins
- 10. The nucleus and organelles bounded by a very flexible membrane
- 11. The double membrane layer that separates the contents of the nucleus from the rest of the cell
- 12. The main protection barrier that surrounds a plant cell
- 13. Cells without membrane-bound organelles or a nucleus
- 15. The powerhouse of the cell
- 16. The organelle in cells that stores DNA and helps the cell make proteins
- 18. The basic principle of modern biology
- 20. The material contained within the nucleus of a cell
- 21. The cell's digestive system
- 22. A cell organelle that makes other substances that the cell needs, such as lipids (fats) and carbohydrates (sugars)
Down
- 1. An organelle in plant cells used to store food and water
- 2. The process in cell division by which the nucleus divides
- 4. Cells with membrane-bound organelles and a nucleus
- 5. A cell organelle that contains many ribosomes on its outer surface and makes proteins the cell needs
- 7. The nucleus and organelles bounded by a thick and rigid cell wall
- 8. A thin biological layer that contains the cytoplasm and all organelles of the cell
- 9. An organelle that modifies, packages and sorts proteins sent from the endoplasmic reticulum
- 14. The main food producer for plant cells
- 17. The jelly-like liquid that fills the inside of a cell
- 19. Minute hairlike organelles, identical in structure to flagella, that line the surfaces of certain cells and beat in rhythmic waves