Across
- 1. The organelle in plant cells that perform photosynthesis
- 5. The process of plants transforming sunlight into energy
- 11. A microscope that uses 2 lenses, an objective lens and an eyepiece lens
- 15. The process of cells committing suicide
- 17. Blood cells that deliver oxygen to the body
- 19. What all living things are made up of
- 22. The 3 theories about how cells work
- 25. The dark, round orb that controls everything in a cell
- 27. The thin skin of cells which is the outermost layer of animal cells and underneath the cell wall in plant cells
- 28. The type of cells plants are made of
- 29. The unit of measurement that is equivalent to 1 millionth of a metre
Down
- 2. A microscope that uses light and magnifying lenses to see tiny objects
- 3. A thin sheet of material that forms a partition
- 4. The man who invented the microscope
- 6. A step in development
- 7. The part of a microscope or telescope that you look into
- 8. The part of the cell that makes protein
- 9. The lens in a microscope that is closest to the object being viewed
- 10. It is the male reproductive cell
- 12. The unit of measurement that is equal to 1 billionth of a metre
- 13. The process of cells multiplying
- 14. Existing before
- 16. The cells that are neurons
- 18. A curved piece of glass (or any transparent material) used for concentrating or dispersing light
- 20. The liquid in cells
- 21. A bubble or water balloon in a cell
- 23. The layer of matter around the cell membrane on plant cells
- 24. The biological process of cells absorbing things outside their membranes
- 26. The man who discovered cells