Across
- 2. a reaction that releases more energy than is used
- 3. - a reaction that uses more energy than is released
- 5. monomer of nucleic acid
- 8. organic compounds that contain carbon, hydrogen, and oxygen atoms
- 12. a single sugar molecule
- 14. organic compounds that contain carbon, hydrogen, oxygen, and nitrogen
- 16. the amount of energy needed to start a chemical reaction
- 19. type of lipid that is found in cell membranes
Down
- 1. large sugar molecule
- 4. atoms or small molecules that bond together to form more complex structures
- 6. changes substances into different substances by breaking and forming chemical bonds.
- 7. large organic molecules that make up all living things
- 9. nonpolar molecules that include fats, oils, steroids, and waxes.
- 10. polymer of proteins
- 11. large molecule which consists of many identical or similar subunits connected together
- 13. monomer of proteins
- 15. an abbreviation for the side chain of a protein
- 17. biological catalysts which speed up chemical reactions in the body without being used up themselves
- 18. the presence of an enzyme ________ the reaction's activation energy