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Carb. Metabolism

Biosci 106

QuestionAnswer
Chirality same # atoms arranged differently in 3d space
Enantiomers non superimposable mirror image
diastereomers nonsuperimposable not mirror image
Monosaccharides -simple sugar -lots of -OH -c=o -end with ose
Glucose -6 C ring -short term E -equilibrium
Fisher projection -OH on left L -OH on right D -C 1 at top C=O
Haworth -Alpha trans OH below -Beta cis OH above
Fisher--->Haworth -Left= above plane -Right= below pane
Oliglosaccharides -glycosidic linkages -disaccharide's= 2 -Alpha & Beta forms
Sucrose glucose + fructose
Maltose 2 X Glucose
Polysaccharides -storage & structural -100/1000's of mono -glycosidic linkages
how do poly saccharides differ? -Length of chains -types of bonds -degree of branching -re-occurring mono units
polysaccharides with Alpha glucose? -Solubility -HO- points out -helix
Polysaccharides with Beta Glucose? -Strength -straight structure -HO- side-by-side
Starch -storage in plants -~1mg/mL solubility -1-4 a OR 1-4&1-6a
Two forms of starch -Amylose pectin: branched -Amylose: straight chain
Glycogen -V. soluble>10mg/mL -1-4&1-6 a -more branched than amylose pectin -~10residues
Chitin -anthropoid exoskeleton -1-4B -no N attached to C
Cellulose -Most abundant, plant wall -1-4B -stable configuration=flat sheets
Created by: meglet
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