1. Chapter 5 Macromolecules

2. Slide 2 of 14

3. Slide 3 of 14 What is a Macromolecule?  Giant molecule  Consists of thousands of atoms  Carbs, Lipids, Proteins, Nucleic Acids  Polymer is a long molecule composed of similar or identical building blocks  Monomer  Building block of a polymer  3 of the 4 macromolecules are polymers

4. Slide 4 of 14 MacromoleculeFunction CarbohydrateEnergy & Structural Support LipidEnergy storage & Membrane components Nucleic AcidsGenetics & Heredity ProteinsStructure, enzymes, transport, & defense Macromolecules

5. Slide 5 of 14  Carbohydrates  Lipids  Nucleic Acids  Proteins

6. Slide 6 of 14 Let’s Build a Polymer  Polymerization is a result of dehydration synthesis rxns  Dehydration reaction  Removal of water from molecules  Also called Condensation reaction  Synthesis reaction  Building a complex molecule from simpler components

7. Slide 7 of 14

8. Slide 8 of 14 Polymer Animation  05_02Polymers_A.swf

9. Slide 9 of 14 Polymerization has many names  Polysaccharide  Glycosidic linkage  Monosaccharide + monosaccharide  Polypeptide  Peptide bond  Amino acid + amino acid  Polynucleotide  ???? bond  Nucelotide + nucleotide

10. Slide 10 of 14 Dehydration Synthesis & Hydrolysis

11. Slide 11 of 14 Build up or Break Down Dehydration Synthesis Builds a polymer from monomers (Synthesis) Involves the removal of water (Dehydration or Condensation) Hydrolysis Uses water to break the covalent linkages Splits apart polymers Reverse of dehydration synthesis

12. Slide 12 of 14 Some Questions (Page 1) 1. What is a macromolecule? 2. Name all of the macromolecules. 3. Is there any difference between polymers and macromolecules? Why? 4. What is the relationship between monomer and polymer? Why?

13. Slide 13 of 14 Some Questions (Page 2) 1. Which macromolecule is not a polymer? Why? 2. What bond type forms from dehydration synthesis? Why? 3. Peptide bonds & glycosidic linkages are what types of bonds? Why?

14. Slide 14 of 14 Some Questions (Page 3) 4. What is the name of the type of reactions that break apart polymers? Why? 5. You eat a steak, a protein rich food, what type of reactions will begin to take place in the stomach? Why? 6. Do you need to drink water with that steak? Why?