Carbohydrates - 5.1,5.2 Flashcards
Polysaccharide
Monosaccharides connected by glycosidic linkages!
Monomers strung together with covalent bonds are
Polymers
Polymerization
Which rxn
Catalyzed by
Prod
Building stings of monomers
Dehydration/condensation rxn
Catalyzed by enzymes
Water and polymer
Depolymerizatation
Breaking down strings of monomers
Hydration/hydrolysis (water added, bonds break)
Catalyzed by enzymes
Prod monomers
Carbs used by cells to
2
Store energy (fuel) Cell-cell communication
Carb monomer
Most common?
Monosaccharide (simple sugars)
Glucose
Glucose
C#
Forms
6 carbon sugar
Linear and !!RING!!
Monosaccharides differ in…
#of carbons position of carbonyl group arrangement of func. groups
Monosaccharides linked by
Glycosidic linkages
and dehydration rxn
Disccharides differ in
Comp. of monosaccharides and carbons involved in bond
Polysaccharides
Alpha
STORAGE
ex: amylose, glyogen
Helical
Beta polysaccharides
STRUCTURE
ex: cellulose, chitin
Straight “sheet”
Sugar code
Sugar (glycan) chains on cell surfaces present a biochemical message (signal) for intercellular communication
OR molecular recognition elicits a cellular response
Polysaccharides have diverse structures because….
Diff. glycosidic linkages are poss. bc the OH groups on monos can for a glycosidic bond with another mono
___ ____ enables specific intermolecular recognition between cells
Structural diversity
