5.2 Sugars Flashcards
monosaccharides generally have molecular formulas that are
some multiple of the unit CH2O
(pg 70) how are monosaccharides classified
1-aldose or ketose -based on location of carbonyl group
2- classified by length of carbon skeletons
3- the spatial arrangement around asymmetric carbons (like enantiomers)
glucose:
aldose
hexose (6 carbons)
form rings
functions of monosaccharides
1 cellular respiration
]2 their carbon skeletons serve as raw material for synthesis of other small organic molecules (like amino acids and fatty acids )
what links two monosaccharides in a disaccharide
glycosidic linkage
two bonded glucoses makes
maltose (disaccharide) -
the most prevalent disaccharide:
sucrose (table sugar)
made of glucose and fructose
lactose is made from
glucose and galactose