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22 Cards in this Set
- Front
- Back
D-Glyceraldehyde - 3
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The reference compound for naming D and L isomers of sugars
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D-Erythrose
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4 - C
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D-Ribose
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5-C
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The reference compound for naming D and L isomers of sugars is:
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glyceraldehyde.
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D-Glucose - Mannose - Galactose
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RLRR ---- LLRR (4) ---- 6
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Which of the following is an epimeric pair?
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D-glucose and D-mannose
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L-mannose and L-fructose
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Isomere pair
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DiHAcetone
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3C Ketotrio sugar
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D-Fructose
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isomere of D-Glucose (an aldohexose)
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alpha vs beta Glucopyranose - an anomeric pair
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alpha = down -- keep flipping back and forth
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Oxidized
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gain O2 or giving up electron for that O2 --> loosing electron -- getting old
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reducing sugar (D-Glucose)
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able to be oxidized (gain O2 or giving up electron for that O2) ------- D-gluconate.
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Glc(a1-4)Glc
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Matose with reducing end is a reducing sugar
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Gal(be-1-4)Glc
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Lactose - COOH reducing sugar
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Glc(al-1-2)Fru
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Sucrose - not reducing
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Glc (al 1-1) Glc
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Trehalose
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Glc (al1-4) x
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Amylose
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a(1-6) branch points
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in amylopectin (plant starch) and glycogen (animal starch)
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Glc(b1-4)x
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beta can't break
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Starch and glycogen are both polymers of:
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a-D-glucose
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From the abbreviated name of the compound Gal(b1 -4)Glc, we know that:
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C-4 of glucose is joined to C-1 of galactose by a glycosidic bond.
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When the linear form of glucose cyclizes, the product is a(n):
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hemiacetal.
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