October 1, 2012

 Remember Organic means “contains carbon”

 Simple Sugars  Starches

 Fats and oils  Make cell membranes

Phospholipid

 Polymers of amino acids

 Proteins function in just about everything  Structure- skin, hair, muscle  Signaling – hormones  Transport  Enzymes

 Proteins are polymers of amino acid monomers  There are twenty different amino acids.  Amino acids differ in “R” groups

 Proteins differ in the number and order of amino acids  Amino acids interact to give a protein shape  Incorrect amino acids change a proteins structure and function.

 Nucleic acids are monomers of nucleotides  Contain C, H, O, N, P  Store and transmit genetic information (DNA and RNA)

 Phosphate group  Sugar  Nitrogen base

 My.hrw.com  Section 2.3  Multimedia Labs and Activities  Virtual Investigations

 Describe at least one function of each group of organic compound.  Why are proteins considered polymers but lipids are not?  What class of macromolecule does the following compound belong to?

 Make a “study guide” for yourself.  List each of the four organic compounds with ◦ Their monomer and polymer (structure) ◦ At least two functions ◦ How would you test for this organic compound in the lab?

 Chemical Reactions change substances by breaking and forming chemical bonds  Reactants are changed (what you react)  Products are made (what you produce)

 Activation Energy is the amount of energy that needs to be absorbed to start a chemical reaction (to activate the reaction)

 Release more energy than they absorb  (Release heat)

 Absorb more energy than they release  (take in heat energy  feels cold)