Across
- 1. Ca
- 4. C6H12O6
- 7. acid H2CO3 (2 words)
- 9. Na
- 13. a subatomic particle that carries no charge
- 16. N
- 17. Fe
- 18. chemical reaction in which energy is released
- 20. Mg
- 21. a blood pH range greater than 7.45
- 22. chemical reaction in which a large molecule is broken down into smaller units with the addition of water
- 24. ribonucleic acid
- 25. when atoms combine together by donating or accepting electrons
- 26. twisted ladder or spiral arrangement of a DNA molecule (2 words)
Down
- 2. the chemical combination of two or more atoms
- 3. negatively charged ions
- 5. subatomic particle with a positive charge
- 6. carbohydrate molecule composed of more than two simple sugars
- 8. a few amino acids bonded together to form a small chain
- 10. the ability to due work
- 11. S
- 12. a chemical bond in which electrons are shared by atoms
- 14. O2
- 15. the tendency of an organism to maintain chemical equilibrium under fluctuating external changes
- 17. forms of an element that have the same number of protons but different numbers of neutrons
- 19. positively charged ions
- 23. deoxyribonucleic acid