Presentation on theme: "Dehydration Synthesis – linking of monomers together to form a polymer"— Presentation transcript:
1 Dehydration Synthesis – linking of monomers together to form a polymer Dehydration Synthesis – linking of monomers together to form a polymer. Water is removed by taking a hydrogen from one molecule and an alcohol (OH) from the other molecule.Hydrolysis – means to break (lysis) with water (hydro). A polymer is brokendown back into monomers.Fig. 3.7
2 CARBOHYDRATESClass of biological molecule that includes single monomer sugars (monosaccharide), two monomer sugars (disaccharide), and many monomer sugars (polysaccharide).Examples of monosaccharide isomers – same molecular formula and different structures.
3 Monosaccharides Monosaccharides – mono = single, sacchar = sugar Simple sugarsC6H12O6Glucose and fructoseBroken down for energy in cellular respiration (4 Calories per gram)
4 DISACCHARIDES Formed by dehydration synthesis of two monosaccharides. Broken down by hydrolysis into two monosaccharides.Maltose = 2 glucoseSucrose = glucose + fructose
5 POLYSACCHARIDES Complex carbohydrates, long chains of monomers Starch – storage polysaccharide, found in plantsGlucose monomersGlycogen – stores excess sugar, found in animalsBranchedCellulose – most abundant organic compoundFound in plantsGlucose monomers that cannot be hydrolyzed (fiber)Almost all carbohydrates are hydrophilic (water loving)