1. Notes – Macromolecules

2. Macromolecule = Giant Molecule
Monomers = small molecules that can be combined in different ways
Polymers = large molecules that are made of different monomer combinations

3. Four groups of macromolecules
1. Carbohydrates
Monomer = monosaccharides (simple sugars)
Polymer = polysaccharides (complex carbohydrates)
Examples: starch and cellulose in plants, glycogen in animals
Function = energy source and structural support

4. Four groups of macromolecules
2. Lipids
Examples = fats, oils, waxes, steroids, phospholipids
Function = energy storage and water barriers

5. Four groups of macromolecules
3. Nucleic Acids
Monomer = nucleotides
Consist of a nitrogen base, a sugar, and a phosphate group
Polymer = DNA and RNA
Function = store and transmit hereditary information

6. Four groups of macromolecules
4. Proteins
Monomer = amino acids
20 different amino acids
Polymer = proteins
Function = very diverse, including transport, structure, and speeding chemical reactions