Biol 160 Study Guide ? Final Exam 1. Be able to describe what science and a scientific concept are. 2. Be able to define what is and isn?t biology. 3. Know the levels of organization of life that define the scope of biology. 4. What is an atom made of? What charge does each part have? 5. What determines the atomic number of an atom? 6. What is the difference between an ionic and a covalent bond? 7. What is the difference between polar and nonpolar molecules? 8. What is hydrogen bonding and why is it important? 9. What is the general form of a chemical reaction and what are the reactants vs products? 10. How are monomers and polymers related? Be able to describe and recognize a dehydration and hydrolysis reaction.