W3 Mono/Polysacchrides Flashcards
what are carbohydrates primarily used for
most common energy source
what are carbs made of
C
H
O2
whats the ratio of C,H,O in carbs
1:2:1
what are the 3 monosacchrides
glucose (a/b)
galactose
fructose
what are the 3 disacchrides
maltose
lactose
sucrose
what are the monosacchrides for maltose
alpha glucose + alpha glucose
what are the monosacchrides for lactose
beta galactose + beta glucose
what are the monosacchrides for sucrose
beta fuctose + alpha glucose
what is an 20 bond oligosacchride
maltosetriose
what bond is formed in maltosetriose
alpha 1-4 bonds
what is a monopolysacchride
starch
what are the bonds formed in starch
1,6 glycosidic bonds
what is unbranched starch with 1,4 glycosidic bonds called
amylose
what is branched starch with 1,4 + 1,6 glycosidic bonds called
amylopectin
what is glycogen made of and used for
alpha glucoses with amylose and amylopectin
storage molecules of glucose
what are 2 heteropolysacchride
dextran
cellulose
what bonds are formed in dextran
alpha 1,3 + 1,6 bonds
what is cellulose made of
stacks of beta glucoses
what bonds are formed in cellulose
beta 1,4 bonds
why do nucelophiles attack carbs
due to C=O group acting as an electrophile
what is formed when the nucleophile in a carb reaction is H2O
aldehyde hydrate
what is formed when the nucleophile in a carb reaction is OH
hemiacetal
under intramolecular conditions what are hemiacetals able to form
cyclical hemiacetals
what forms when 4,5 OH groups are used as nucelophiles
furanose