Across
- 3. research design is used to answer scientific questions by testing a hypothesis
- 4. directs all cell activity
- 5. variable that is being measured
- 6. way or process used to investigate what is happening around you
- 7. membrane that all cells have
- 8. sample that is treated like the other experimental groups
- 11. a prediction or statement that can be tested
- 12. the application of science to make products
- 16. technology that has led to the globalization of information
- 17. tough, rigid outer coverings that protect the cell
- 18. the abbreviation for endoplasmic reticulum
- 20. organelle where energy is released from breaking down food
- 21. variables that stay the same
Down
- 1. variable that is changed
- 2. research answers scientific questions through observations
- 7. green organelles
- 9. the method that has steps to follow to help solve problems
- 10. structures of eukaryotic cells are called
- 13. gelatinlike material
- 14. a group of similar cells that work together
- 15. bodies that sort proteins and package them
- 19. these are proteins made by cells
- 22. a group of tissues working together