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

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Homework: Read Concepts pgs Pg 83 #9,10,11 pg 85 #5,6,8,11,13

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

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

AIM: How are proteins structured?

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

The R group determines the different amino acids

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

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

Polypeptide

Structure of a protein