BIOL 1020 Lecture Notes - Lecture 5: Hydroxy Group, Monosaccharide, Ribose

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1020
• Professor: Joy E.Stacey

Document Summary

If coming together as polymer - look/work differently (vs. beta) Polysaccharide - polymerization by dehydration: between hydroxyl groups of two monomers below the plain of those rings, 3d aspect to it. Glucose and fructose: table sugar, not 1->4 linkage, 1->2 linkage, enzymes break up polymers, sucrase is the enzyme. Functions of polysaccharides: structure/fibers, chitin, arthropods, store surplus of carbon/energy, starch - plants, glycogen - animals, require very little water for storage less than monomers. Plant polysaccharides: differentiate between starch and cellulose, starch. Long alpha glucose polymer: polymer 1->4, bonds forming as in maltose. If looking at cellulose - every other molecule flipped upside down: form cell walls in plants, various strands held together in one micro fibril. Animal polysaccharides: glycogen, very branched molecules, found in liver/muscle, short lifespan, runners build up glycogen in liver/muscles, fast hydrolysis, fuel needed for run, structural polysaccharide, contains nitrogen, strong and flexible, used in surgical materials for this reason.