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Bio 103 Exam 1 Review – Chapters 1 and 2 Try out the clicker questions on the webpage after you have studied your textbook and notes. Chapter 1 Topics - Introduction The scientific method – Figure 1-3 – know the sequence and the meaning of each step. Look at Figure 1-4 for an example of the scientific method in everyday life. Understand the meaning of variable and control Review the Scientific Inquiry example on pages 4-5. Review Levels of Organization (Figure 1-6), pages 6-7. Understand the scientific meaning of the word “theory” and some examples (page 8). Understand the characteristics (with examples) of Living Organisms – Complex and Organized Grow and Reproduce Respond to Stimuli Acquire and Use Materials and Energy Have DNA to Store Information Understand that the Theory of Evolution by Natural Selection explains life’s unity and diversity (what does that mean?) Chapter 2 Topics – Atoms, Molecules and Life Define: Atom Element Proton Neutron Electron Atomic number Atomic mass Isotopes Electron shell Molecule Inert Reactive Chemical bonds Ionic bonds Ion Covalent bonds Hydrogen bonds Polar molecules Characteristics of water Solvent Hydrophilic Hydrophobic Cohesion Adhesion Water ions Hydrogen ion Hydroxide ion pH scale Acid Base Organic molecules Carbon Functional groups Hydrogen Hydroxyl Carboxyl Amino Phosphate Methyl Reactions Dehydration synthesis Hydrolysis Biological Molecules – what they are made of and what they are for (in general), and examples Carbohydrate Lipid Protein Nucleic Acid Don’t forget that the metric system will also be on this exam – make sure to know how many milligrams in a gram, how many meters in a kilometer, how many millimeters in a centimeter, and the major temperature conversions (boiling and freezing).