Across
- 2. has an unequal distribution of charges
- 5. attaches to each other
- 8. used for energy by the cells of most organisms
- 10. a substance that consists of two or more elements
- 12. a simple sugar like glucose or fructose
- 16. creeps up thin tubes and vessels
- 19. a very strong, sharing of electrons
- 21. commonly called fats or oils
- 22. what holds two separate molecules together(water)
- 23. protein that lowers the energy needed to start reaction
Down
- 1. made of one polynucleotide chain
- 2. an organic compound made up of small molecules called amino acids
- 3. forms the basic structural unit of nucleic acids such as DNA
- 4. compound that is the building block of a protein molecule
- 6. Organic compound composed of hydrogen and oxygen with a ratio of two hydrogen atoms to each oxygen atom
- 7. is an organic compound
- 9. a type of chemical bond that involves a metal and a nonmetal ion
- 11. A compound found mainly in living things
- 13. a complex carbohydrate that forms when simple sugars bind together in a chain
- 14. a pure substance. It cannot be broken down into other types of substances.
- 15. serve as chemical messengers and have other roles
- 16. main element in all organic compounds
- 17. attaches to the wall of another surface
- 18. organic compounds such as sugars
- 20. found in genes, and its sequence of bases makes up a code