ch 5: introduction to carbohydrates Flashcards
monosaccharides
simple sugars that are monomers of carbohydrates and linear
why are sugars fundamental?
provide chemical energy in cells and furnish molecular building blocks required for the synthesis of larger, complex compounds
if carbonyl groups are at the end of a molecule, what does it form?
aldehyde sugar
if carbonyl groups are within the carbon chain, what does it form?
ketone sugar (ketose)
disaccharides
two sugars that link together
how do monosaccharides polymerize?
when a condensation reaction occurs between two hydroxyl groups, which creates a glycosidic linkage
linear polysaccharides
b-1,4 glycosidic bonds
branched polysaccharides
a 1,4 and a 1,6 glycosidic bonds
oligosaccharides
3-20 monosaccharides
polysaccharides
hundreds or thousands of monosaccharides
function of carbs
store energy, provide structure, cell identity markers
glycogen and starch
branched polysaccharides
cell walls and exoskeletons
unbranched polysaccharides
glycoproteins
protein and sugar