BIO1140 CLASS NOTES - TOPIC CARBOHYDRATES

BIO1140 CLASS NOTES - TOPIC CARBOHYDRATES - TOPIC X:...

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TOPIC X: CARBOHYDRATES Polysaccharides Long-chain polymers of sugars or sugar derivatives Have a single, or sometimes an alternating pattern, of repeating units Not informational molecule The major polysaccharides are glycogen and starch, and cellulose Each contain the six-carbon sugar glucose as its repeating unit, but differ in both the nature of the bond between successive glucose units and the presence and extent of side branches on the chains The Monomer Are Monosaccharides The repeating units are monosaccharides A sugar can be defined as an aldehyde or ketone that has two or more hydroxyl groups Two categories: the ketosugars , with an internal carbonyl group , and the aldosugars , with an external carbonyl group Sugars are named according to the number of carbon atoms they contain (ex. triose, tetrose, hexose, etc…) Most common monosaccharide in the biological world is aldohexose D-glucose C 6 H 12 O 6 The formula C n H 2n O n is the general formula Named carbohydrate
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This note was uploaded on 06/17/2008 for the course BIO 1140 taught by Professor Fenwick during the Winter '07 term at University of Ottawa.

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BIO1140 CLASS NOTES - TOPIC CARBOHYDRATES - TOPIC X:...

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