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alpha is ____ and beta is ____ |
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main storage form of glucose in plants |
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main storage form of glucose in animals |
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insect exoskeleton; cell walls of fungi and algae |
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• covalent bond between monosaccharides created by a condensation reaction • make polysaccharides |
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2 variables in making glycosidic bonds |
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• location of the glycosidic bond can vary depending on which two hydroxyl groups interact (1,4 glycosidic bonds vs. 1,6 glycosidic bonds) • orientation of the glycosidic bond (α vs. β glycosidic bonds) |
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glycosidic bonds are analogous to _____ and _____ |
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• peptide bonds that hold proteins together and phosphodiester bonds that connect nucleotides in nucleic acids • important difference: peptide and phosphodiester bonds always form at the same location in their monomers. But because glycosidic linkages form between hydroxyl groups, and because every monosaccharide contains at least two hydroxyl groups, the location and geometry of glycosidic linkages can vary widely among polysaccharides |
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o protein that is covalently bonded to a carbohydrate – usually the relatively short chains of sugars called oligosaccharides • key molecules in cell-cell recognition |
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most important enzyme involved in catalyzing the hydrolysis of α-glycosidic linkages in glycogen |
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• molecule with a carbonyl (C=O) and several hydroxyl (-OH) functional groups, along with several to many C-H bonds • involved in cell-cell recognition |
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provide fibrous structural materials, indicate cell identity, and store chemical energy |
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