Name Date Hour Notes: Unit 1--Protein

(1) What is a protein? Type of Biomolecule Nitrogen Based Molecule

(2) Elements Carbon (C) Hydrogen (H) Oxygen (O) Nitrogen (N) Some contain Sulfur (S)

(3) Monomer Monomer: Basic unit or Smallest unit of a polymer (larger molecule). Protein Monomer: –Amino Acid

(4) Polymer Polymer: A larger structure (molecule) made of many smaller units (monomers). Carbohydrate Polymer: –Polypeptide –Enzyme

(5) Types of Protein Polypeptide: –Many amino acids connected by Peptide Bonds –Like Stringing Beads together Enzyme: –Catalysts: Increase Rate of Chemical Reaction –Decrease Activation Energy –Substrate-Enzyme Binding: Substrate = Molecule Enzyme Binds With Active Site = Where the Substrate Binds to Enzyme Enzyme is recycled afterwards

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(6) Function Major: –Cell Structure –Catalysts Minor: –There are no MINOR functions. –All proteins are important –Protein = Expression of DNA

(7) Examples Meats Nuts Beans Dairy

(8) Denaturing Denaturing: A change in the structure, due to external stress such as chemicals or heat. Protein Structure is very specific: –Amino Acid Sequence  Polypeptide Bonding  Coiling –If the structure is messed up, the protein does not function properly Examples: –Cooking Eggs –Fever

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