Across
- 1. bond that shares electrons
- 2. chemical union of two or more elements
- 3. pH above 7
- 5. pH below 7
- 6. RNA or DNA
- 10. attraction of molecules between different molecules
- 12. many sugars combined, starch
- 16. polymer of amino acids
- 17. proteins that act as catalysts
- 18. substance that speeds up a reaction
- 19. dissolved substance in a solution
Down
- 1. main energy source for organisms
- 3. compounds that help maintain homeostasis
- 4. single sugars
- 7. bond that transfers electrons
- 8. fats, oils and waxes
- 9. liquid that does the dissolving in a solution
- 11. attraction of molecules between molecules of the same
- 13. substance acted on by an enzyme
- 14. process to maintain balance
- 15. negatively charged particle in an atom