Across
- 2. The single exception to the cell theory
- 4. The basic structural and functional unit of an organism.
- 6. the gas that can freely pass through the cell membrane and is required in aerobic respiration
- 8. It is the site for all the biochemical reactions that take place in a cell
- 10. Scientist who discovered protoplasm
- 11. Who modified the cell theory given by Schleiden and Schwann
- 14. Form of cellular transport that occurs against the concentration gradient
- 15. Instrument used to view cells
- 16. Hereditary unit that is transferred from parent to offspring
- 18. Control Centre of the cell
- 20. Movement of water molecules from a region of their high concentration to low concentration.
Down
- 1. Organisms which do not have a defined nucleus
- 3. Rigid outer covering in plant cells which protect them from mechanical injury.
- 5. Movement of water molecules out of a cell when it is placed in a hypertonic solution
- 7. Spherical body found within a nucleus
- 9. a slipper shaped protozoa
- 12. Structures present within a cell
- 13. the first type of cells discovered by Robert Hooke
- 17. A cell's size and shape depends upon it's:
- 19. The cell wall in fungi is composed of this sugar.