Carbohydrates & Lipids Flashcards
A polyhydroxyaldehyde or polyhydroxyketone, or a substance that gives these compounds on hydrolysis
Carbohydrate
A carbohydrate that cannot be hydrolyzed to a simpler carbohydrate
Monosaccharide
Building blocks of all carbohydrates
Monosaccharide
Formula of monosaccharide
CnH2nOn
A monosaccharide containing an aldehyde group
Aldose
A monosaccharide containing a ketone group
Ketose
Simplest carbohydrate monosaccharides
Trioses
Contains a stereocenter and exists as a pair of enantiomers
Glyceraldehyde
Mirror-images stereoisomers
Enantiomers
The new stereocenter resulting from cyclic hemiacetal formation
Anomeric carbon
Carbohydrates that differ in configuration only at their anomeric carbons
Anomers
One that reduces an oxidizing agent
Reducing sugar
When the carbonyl group of sugar is reduced to a hydroxyl group, the resulting compound is one of the polyhydroxy alcohols known as _____
Alditols
Are particularly important in the metabolism of sugars to provide energy
Phosphoric esters
The bond from the anomeric carbon to the -OR group
Glycosidic bond
a monosaccharide that, when written as a Fischer projection, has the -OH on its penultimate carbon on the RIGHT
D-monosaccharide
a monosaccharide that, when written as a Fischer projection, has the -OH on its penultimate carbon on the LEFT
L-monosaccharide
Stereoisomers that are mirror images
Enantiomers
Stereoisomers that are not mirror images
Diastereomers
SUGAR FORMS A CYCLIC MOLECULE
Cyclization of sugars using C1 to C5=
Hemiacetal
SUGAR FORMS A CYCLIC MOLECULE
Cyclization using C2 to C5 =
Hemiketal
Most stable arrangement in cyclic form of simple sugars
Hemiketal formation
The new stereocenter resulting form cyclic hemiacetal formation
Anomeric carbon
Carbohydrates that differ in configuration only
Anomers