CHAPTER 5: The Structure & Function of Macromolecules OBJECTIVES: Understand Structure and Function of Carbohydrates Proteins Nucleic Acids Lipids Levels of protein folding
Polymers Most macromolecules are polymers build from monomers. Starch is built from glucose monomers Proteins are built from amino acid monomers VIDEO
Joining Polymers Condensation or dehydration reaction: Hydrolysis: Creating a polymer by removing a water Hydrolysis: Water used to split polymers into smaller portions Hydro - Water Lysis – Cut or split
Carbohydrates Fuel and Building Material Simple sugars ( glucose, fructose, galactose) Polymers: starch. All exist in ratio of 1:2:1 C:H:0 Monosaccharides: Monomers of carbohydrates Glucose, ribose Polysaccharides: polymers of monosaccharides Starch, cellulose, glycogen
Glycosidic Linkage
Energy Storage & Structural Support Energy storage polysaccharides Starch: Plants Glycogen: Animals, muscle and liver cells Structural Support Cellulose: Component of plant cell walls Chitin: Exoskeleton of arthropods, lobsters, cockroaches “Crunch”
Chitin