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Across 2. Large compound formed from combinations of many monomers. 5. Substance that speeds up the rate of a chemical reaction. 6. Macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed for growth and repair and to make up enzymes. 7. Large macromolecule formed from monosaccharides. 10. Macromolecule containing hydrogen, oxygen, nitrogen, carbon and phosphorus. (DNA & RNA) 11. Nucleic acid that contains the sugar deoxyribose. 14. Material composed of two or more elements or compounds that are physically mixed together but not chemically combined. 17. Monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base. 19. Reactant of an enzyme-catalyzed reaction. 20. Substance that is being dissolved in a solvent to make a solution.

Down 1. Compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body. 3. Simple sugar molecule. 4. Small unit that can join together with other small units to form polymers. 8. Macromolecule made mainly from carbon and hydrogen atoms; includes fats, oils, and waxes. 9. Mixture of water and nondissolved materials. 12. Mixture of two or more substances in which the molecules of the substances are evenly distributed. 13. Compound with an amino group on one end and a carboxyl group on the other end. 15. Single-stranded nucleic acid that contains the sugar ribose. 16. Substance in which a solute is dissolved to form a solution. (does the dissolving) 18. Protein that acts as a biological catalyst.