Across
- 3. the basic unit of life
- 5. describes an organism that is made of only one cell
- 8. explanation that defines all living things in terms of cells; Schleiden, Schwann and Remak/Virchow are credited with this explanation
- 9. a dark spot inside the nucleus that stores the materials that will be used later to make ribosomes
- 11. the fluid inside a cell
- 12. small organelle that manufactures proteins
- 13. special molecule that provides energy for the cell’s activities; made in the mitochondria
- 14. organelle that regulates (controls) what goes in and out of a cell
- 17. cells that have a nucleus and membrane-bound organelles
- 19. a large chamber in plant cells that stores water and can help provide support when it is full
- 20. the cell’s powerhouse; break down food molecules to make ATP
- 21. plant and algae cells have a thick ______ made of cellulose
- 23. a living thing
Down
- 1. scientist who first observed cells under the microscope
- 2. organelle found in plants and algae cell that converts energy from sunlight
- 4. organelle containing ‘digestive’ enzymes
- 6. the only living things that are made of prokaryotic cells
- 7. cells that do NOT have a nucleus
- 10. organelle that modifies, packages, and transports materials out of the cell
- 15. describes an organism that is made of two or more cells
- 16. the control center of the cell
- 18. the cell’s heredity material; found in the nucleus
- 22. small network of tubes that transports materials inside the cell; can have ribosomes attached to it (abbr.)