2.1 What Is Life? - p. 25
• What is Life?
     Qualities of Life
        1 - movement
        2 - sensitivity
        3 - development
        4 - complexity
        5 - death
• Life Has Five Characteristic Propeties
        1 - Homeostasis
        2 - Metabolism
        3 - Cellular organization
        4 - DNA
        5 - Reproduction
2.2 Basic Chemistry - p. 30
• Atoms: The Basic Structural Units of Matter
     - Atoms are the basic structural units of matter.
     - Atoms are made of electrons, protons, & neutrons.
     - Electrons orbit the nucleus in different energy levels and have a negative charge.
     - Protons are in the nucleus and have a positive charge.
     - Neutrons are in the nucleus and have no charge.
• Formation of Bonds Stabilizes Atoms
     - An atom that gains or loses electrons is called an ion.
     - An element is a substance composed of only 1 kind of atom.
     - When 2 oppositely charged ions are connected, it is an ionic bond.  Electrons are taken/given.
     - When electrons are shared, it is a covalent bond.
     - A molecule is a group of atoms held together by covalent bonds.
2.3 Molecules of Life - p. 33
• Organic Compounds Are Derived From Carbon
     - Organisms are made up 4 types of macromolecules: carbohydrates, lipids, proteins, nucleic acids.
     - Carbon is the most common element in living things.
     - Molecules with carbon to carbon bonds are called organic compounds.
• Carbohydrates are Energy Sources
     - Carbohydrates are energy sources (such as starch, glycogen) made of carbon, hydrogen, and oxygen.  
     - Carbohydrates can be monosaccharide (glucose) and polysaccharide (starches, cellulose).
     - Cellulose gives structural support to plants.
• Lipids Store Energy
     - Lipids (fats, oils, steroids, waxes) store energy better than carbohydrates because they have more C-H bonds.  
     - Steroids include cholesterol and chlorophyll. 
     - Lipids are not soluble in water.
     - Saturated fats come from animals.
     - Unsaturated fats come from plants.
• Proteins Provide Structure and Increase Reaction Rate
     - Proteins are made of chains of amino acids.
     - Proteins function as structural molecules and enzymes.
• Nucleic Acids Contain Genetic Information
     - DNA and RNA are nucleic acids made of units called nucleotides.
     - DNA is a double helix structure found in all cells.  It contains your genetic information in bodies called chromosomes.
     - RNA helps to synthesize proteins.
• Macromolecule Summary