1. Homework: Read Concepts pgs 69-71 Pg 83 #9,10,11 pg 85 #5,6,8,11,13

2. Do Now: Cheese pizza contains lots of protein… Why are proteins important?

3. Proteins 1) Nutrients 2) Enzymes- aid Chemical reactions 3) Provide Structure 4) Protect immune System 5) Protein channels Transport substances

4. AIM: How are proteins structured?

5. The monomers of proteins are amino acids. Each amino acid contains: An amino group A carboxylic acid An Alpha carbon A Hydrogen “R” side chain

6. The R group determines the different amino acids

7. For each amino acid, Draw a triangle around the amino group, Draw a square around the Carboxyl group, and circle the R group.

8. Proteins are polymers of many amino acids bound together Amino acids join through dehydration synthesis (condensation reactions)

9. Polypeptide

10. Structure of a protein