Module 4 Flashcards
Naming monosaccharides
3 carbons: triose
4 carbons : tetrose
5 carbons: Pentrose
6 carbons: hexose
Aldose
R-C=O- H
Ketose
O
II
R-C-R
Stereoisomers
Different spatial arrangement of atoms
Entantiomers
Mirror image of each other
Are D and L glyceraldehydes entantiomers
Yes
5 carbon monosacch that an aldehyde what’s the name?
Aldopentose
D isomer of -OH
On the right side
L isomer of -OH
On the left side
Optical activity
Interaction with polarized light
-also distinguishes isomer
Rotate of isomers
One enantiomer rotates clockwise (dextrorotatory) the other rotates counter clockwise (levorotory)
Diastereomers
Two or more chiral centers, and that are not an enantiomer
Anomers
Alpha and beta isomers
Alpha
OH at bottom
Beta
OH at top
What does galactose turn into
Glucose
Benedict’s reagent
Red brick precipitate
- forms Cu2O
Which is not a reducing sugar
Only sucrose
Glycosidic bond
Anomeric OH reacting with another OH on an alcohol or sugar
Homopolysaccarides
One type of monosaccharide
Hereropolysaccharides
Two or more different monosaccharides
Amylose
1,4 links being linear
Amylopectin
1,6 links are branched
Glycogen
Major glucose storage carbohydrate in animals is glycogen
Where is glycogen stored?
Liver and muscle cells
Cellulose
In plants
Which is the simplest amino acid
Glycine
Which of the following describes the function of the enzyme cyst trans isomerase?
It breaks in reforms, a double bond to change the arrangement of the groups around a double bond