1. BIOMOLECULES  MACROMOLECULES  made by polymerization-large compounds built by joining smaller ones together.  Smaller units are called monomers.  4 major molecules important to life.  Carbohydrates, lipids,nucleic acids and proteins.

2. CARBOHYDRATES  1:2:1 RATIO  1 Carbon: 2 Hydrogen: 1 Oxygen  Main source of energy for living things  Also has structural purpose for living things. 1. Plant cells have cell walls made of cellulose 2. Animal cells store excess sugars as glycogen

3. LIPIDS  Made of Carbon and Hydrogen.  NOT soluble in water  doesn’t mix with water  Used to store energy  Part of the cell membrane.  Saturated-Solid at room temperature. No double bonds  Unsaturated-liquid at room temperature. Double bonds between Carbons.

4. NUCLEIC ACIDS  Composed of Hydrogen, Oxygen, Nitrogen, Carbon and Phosphorus.  Subunits are called nucleotides.  Store and transmit hereditary information.  Ex. DNA, RNA

5. PROTEINS  Composed of Nitrogen, Carbon, Hydrogen, and Oxygen.  Monomers are called amino acids  Control rate of reactions  Function in transport and formation of bone and muscle cells.  Folded shape is important in enzyme recognition process.