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lecture35 - OH O polysaccharide HO HO O OH HO OH O O OH O O...

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O OH HO HO OH O OH OH O HO OH O OH HO HO OH O OH O HO OH O OH O HO OH O OH O HO OH O OH O HO OH O OH OH O HO OH polysaccharide oligosaccharide hydrolysis (reaction with water) H -O-H O OH OH HO HO OH OH HO OH O OH HO HO OH monosaccharide hydrolysis (reaction with water) H -O-H hydrolysis (reaction with water) H -O-H NO FURTHER SIMPLIFICATION (NO MORE C-O-C LINKAGES!)
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CH 2 OH H OH O H H OH O H CH 2 OH OH H H OH O H OH H CH 2 OH OH H H OH O H OH H OH H CH 2 OH OH H triose tetrose pentose hexose ald ose 2 1 = 2 2 2 = 4 2 3 = 8 2 4 = 16 Monosaccharide Classification CH 2 OH CH 2 OH O CH 2 OH O CH 2 OH OH H CH 2 OH O OH H CH 2 OH OH H CH 2 OH O OH H OH H CH 2 OH OH H ket ose 2 0 = 1 2 1 = 2 2 2 = 4 2 3 = 8 All carbons have one –OH group except exactly one carbonyl
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Which of the following is a D-ketose pentose? A. B. C. D. E.
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Which of the following is a D-ketose pentose? A. B. C. D. E.
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CH 2 OH H OH O H H OH O H CH 2 OH H OH HO H O H CH 2 OH H OH H OH O H HO H O H H OH O H HO H O H D-(+)-Glyceraldehyde D-(-)-Erythrose D-(-)-Threose
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