Across
- 3. pertaining to or exhibiting magnetism produced by electric charge in motion
- 4. having cells that lack membrane-bound nuclei
- 9. any of green pigments found in photosynthetic organisms
- 11. a whole formed by a union of two or more elements or parts
- 14. formation of compounds in plants aided by radiant energy
- 15. a specialized part of a cell; analogous to an organ
- 18. any organism of microscopic size
- 20. an oxide containing two atoms of oxygen in the molecule
Down
- 1. a way of thinking or coming to mutual understanding
- 2. depending on free oxygen or air
- 5. an idea evoked by some experience
- 6. any coloured material found in a plant or animal cell
- 7. dioxide a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances
- 8. a monosaccharide sugar that has several forms
- 10. the supporting tissue of an organ (as opposed to parenchyma)
- 12. a colorless, odorless gas that is essential for respiration
- 13. organelle in which photosynthesis takes place
- 16. the totality of surrounding conditions
- 17. the simplest structural unit of an element or compound
- 19. produced by reactions involving atomic or molecular changes