Presentation on theme: "Energetics. Do Now-QUIZ on separate sheet of paper- do not talk or use notes Place your HW on your desk 1.Analyze why Carbon is unique 2.Define polymer."— Presentation transcript:
Do Now-QUIZ on separate sheet of paper- do not talk or use notes Place your HW on your desk 1.Analyze why Carbon is unique 2.Define polymer 3.What is the monomer of proteins? 4.Analyze a disaccharide?
Carbon Properties http://www.elementalmatter.info/carbon-properties.htm Carbon has 4 valence electrons; therefore, Carbon can bond to 4 other elements Carbon also readily bonds to other C, forming chains and rings=variety of organic compounds
1. Carbs Monomer=saccharide Carbon Hydrogen and Oxygen 1C:2H:1O Energy or structure Monosaccharides, disaccharides, polysaccharides
A. Monosaccharides Simple sugar; monomer Carbon:Hydrogen:Oxygen 1:2:1 (CH 2 O) n n is 3-8 EX (CH 2 O) 6 C 6 H 12 O 6 Most common: glucose, fructose, galactose Glucose= energy for cells Fructose= in fruits; sweetest Galactose= in milk
Glucose, fructose, galactose C 6 H 12 O 6 Same chemical formula but different structure= isomers
Enzymes RNA or protein Biological catalysts- speed up chemical reactions by lowering activation energy
Enzyme-Substrate Complex 1.Enzyme fits like lock and key to substrate at enzyme’s active site 2.Enzyme changes shape so bonds in substrate are weakened 3.Enzyme releases products 4.Enzyme is unchanged and can be used over and over again http://www.youtube.com/watch?v=V4OPO6JQLOE Temp and pH can change enzyme shape and enzyme won’t fit on substrate - no chemical rxn