1. This measures the hydrogen ion level of a solution. 2. What kind of solution contains more hydrogen ions than hydroxide ions? 3. This is the name for a compound with many sugar subunits linked together. 4. What are the positively charged particles of a nucleus called? 5. This is the name given to an amino acid added to a dipeptide. 6. Of what kind of organic compound are oils, waxes, and fats an example? 7. These are the individual subunits that make up DNA and RNA. 8. What is a long chain of amino acids called? 9. What type of bond involves the sharing of electrons? 10. What sugar does DNA contain? 11. When the pH is greater than 7 , it is called this. 12. What sugar does RNA contain? 13. Negatively charged particles of an atom are called this. 14. This is the name for the region where the substrate binds to the enzyme. 15. These are the individual subunits that make up proteins. 16. This nucleic acid stands for "ribonucleic acid" 17. This nucleic acid stores genetic information. 18. Name for reactants that are affected by an enzyme. 19. Name for any substance that speeds up the rate of a chemical reaction. 20. One sugar 20. One sugar 21. Sugars, Starches and Cellulose belong to this category. 22. Two amino acids joined together by a peptide bond is called this. 23. DNA and RNA belong to this category of biological molecules. 24. Name for an electrically charged atom. 25. When the pH equals 7 , it is said to be this. Biochemistry Matching 1. Atom A. a group of atoms held together by covalent bonds 2. Ion B. force holding two atoms together resulting from a chemical reaction. 3. Electron C. negatively charged particles moving around the nucleus. 4. Molecule D. force of attraction between opposite charged ions 5. Chemical Bond E. atoms that gain or lose electrons in chemical reactions. 6. Covalent Bond F. molecules with carbon - carbon bonds 7. Ionic Bond G. a pure substance composed of only one type of atom. 8. Macromolecule H. composed of molecules joined together in one large molecule. 9. Organic Compound I. chemical bond which atoms share electrons. 10. Element J. smallest particle of matter Fill in the Sentences 1. The most abundant compound in most living things is 2. The region on an enzyme to which a substrate binds is called the 3. A chemical bond in which two atoms share a pair of electrons is referred to as a bond. 4. All matter occupies space and has 5. Proteins are synthesized from amino acids in long chains called Extra Credit What type of biological molecule is an enzyme?