Presentation on theme: "Warm-Up What are the 4 classes of macromolecules?"— Presentation transcript:
1 Warm-Up What are the 4 classes of macromolecules? Give an example of each type of macromolecule.
2 Ch. 5 Warm-Up ActivityIn your family groups, complete #1-5 on Activity 4/5.1: “How can you identify organic macromolecules?”
3 Warm-UpWhat are the 4 levels of protein structure? What bonds are formed in each level?Which protein was involved in the curds & whey lab yesterday?Explain what happened to the milk to form the curds and whey.
4 The Structure and Function of Large Biological Molecules Chapter 5The Structure and Function of Large Biological Molecules
5 You Must KnowThe role of dehydration synthesis in the formation of organic compounds and hydrolysis in the digestion of organic compounds.How to recognize the 4 biologically important organic compounds (carbs, lipids, proteins, nucleic acids) by their structural formulas.The cellular functions of all four organic compounds.The 4 structural levels of proteinsHow proteins reach their final shape (conformation) and the denaturing impact that heat and pH can have on protein structure
6 ie. amino acid peptide polypeptide protein MonomersPolymersMacromoleculesSmall organicUsed for building blocks of polymersConnects with condensation reaction (dehydration synthesis)Long molecules of monomersWith many identical or similar blocks linked by covalent bondsGiant molecules2 or more polymers bonded togetherie. amino acid peptide polypeptide proteinlargersmaller
24 Illustrative Examples: Variations within proteins provide a wider range of functions:Different types of hemoglobinMHC proteins
25 Function: store hereditary info II. Nucleic AcidsFunction: store hereditary infoDNARNADouble-stranded helixN-bases: A, G, C, ThymineStores hereditary infoLonger/largerSugar: deoxyriboseSingle-strandedN-bases: A, G, C, UracilCarry info from DNA to ribosomestRNA, rRNA, mRNA, RNAiSugar: ribose
26 Nucleotides: monomer of DNA/RNA Nucleotide = Sugar + Phosphate + Nitrogen Base
27 Nucleotide phosphate A – T Nitrogen G – C base 5-C sugar Purines PyrimidinesAdenineGuanineCytosineThymine (DNA)Uracil (RNA)Double ringSingle ring5-C sugar
29 Information flow in a cell: DNA RNA protein
30 Differ in position & orientation of glycosidic linkage III. CarbohydratesFuel and building materialInclude simple sugars (fructose) and polymers (starch)Ratio of 1 carbon: 2 hydrogen: 1 oxygen or CH2Omonosaccharide disaccharide polysaccharideMonosaccharides = monomers (eg. glucose, ribose)Polysaccharides:Storage (plants-starch, animals-glycogen)Structure (plant-cellulose, arthropod-chitin)Differ in position & orientation of glycosidic linkage
31 The structure and classification of some monosaccharides
40 Have some C=C, result in kinks SaturatedUnsaturatedPolyunsaturated“saturated” with HHave some C=C, result in kinksIn animalsIn plantsSolid at room temp.Liquid at room temp.Eg. butter, lardEg. corn oil, olive oil