CHM 360 Exam 3
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Created by:
acrawley2781 on November 4, 2011
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16 terms
Terms | Definitions |
|---|---|
 Anomers | Two possible diasteriomers that form because of cyclization |
| Epimers (ex: D-glucose and D-galactose) | Diasteriomers that differ in a single chiral carbon |
| N-glycosidic linkage | Attaches polypeptides with a side chain amide nitrogen from the amino acid asparagine |
| O-glycosidic linkage | Attaches polypeptides to the side chain of hydroxyl of serine or threonine |
| Galactose and Glucose b (1,4) reducing | What is the Lactose made of, what is its linkage, and is it a reducing sugar? |
| Two D-glucose molecules a (1,4) (Does not exist freely in nature!) | What is maltose made of and what is its linkage? |
| Glucose and Fructose a,b (1,4) nonreducing | What is the Sucrose made of, what is its linkage, and is it a reducing sugar? |
| alpha points down and beta points up | What is the difference between α and β? |
| 8 isomers (2^n and n=3) | If you have a molecule with 3 chiral carbons, how many optical isomers from this molecule will exist? |
| aldonic | Oxidation of an aldehyde group yields an ___________ acid |
| uronic | Oxidation of a terminal CH2OH group and not the aldehyde group) yields a ___________ acid |
| aldaric | Oxidation of both the aldehyde and CH2OH gives an _____________ acid |
| linear | What structure must a sugar be to be oxidized by a Benedicts reagent? |
| isomerization | What reaction does glucose undergo to form fructose? |
| Reducing sugar | Sugars that can be oxidized by weak oxidizing agents such as Benedicts reagent |
| Glycosidic linkage | The reaction between a cyclic hemiacetal or hemiketal (monosaccharide) and an alcohol group on another monosacchride makes what type of bond? |
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