Stoltzfus 2
Terms
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- What are stereoisomers
- isomers with the same order of atomic connections but different configurations
- What are enantiomers?
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non superimposable mirror images
(all the chiral centers are opposite) - What are diastereomers?
- Stereoisomers that are not enantiomers... aka, not all of their chiral centers are opposite, but they have more than one
- What are epimers?
- A special kind of diastereomer that differs at only one chiral center
- What are two ways to identify the anomeric carbon?
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1) is it the singular carbon connected to the oxygen.
2) it is the carbon that is opposite the Carbon 6 (CH2OH) - How do you tell if it is alpha or beta?
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The OH connected to the anomeric carbon will be down for alpha and up for beta.
**BE on the lookout, if the sugar is turned over, it will be opposite....the Carbon 6 is a ref point. Alpha-they are on opp sides of ring Beta- same sides of ring - monosaccharides are linked together by what type of bonds
- glycosidic
- How do you distinguish a reducing sugar?
- Reducing sugars have an anomeric carbon that is not part of a glycosidic bond
- What is the glycosidic bond structure of sucrose?
- glucose a-1,b-2 fructose
- what is the glycosidic bond structure of lactose?
- galactose B-1,4 glucose
- what is the glycosidic structure of amylose
- alpha 1 4
- what is the glyc structure of glycogen
- a 1 4 linked glucoses with a 1 6 linked glucoses
- Why is cellulose's function as fiber?
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the body can not recognize it's beta bonds to break it down, therefore it passes right thru
cellulose is also good for linear structure, as it is linear - Amylose is compact/dense
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compact
good for storage
the body DOES recognize it's bonds and breaks it down - What are gluosaminoglycans?
- polysaccharides containing sugarthat serve as structural roles in joints
- Oligosaccharides play an important role as ______
- cellular marks aka ABO blood groups