Lecture notes
Biology - Polysaccharides
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- AQA
Polysaccharides notes Unite 1 biology
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-Polysaccharides
Polysaccharides : Formed from the condensation of
many monosaccharides
chemical bond
joined by a .
formed condensation of
Starch is a
polysaccharide by the reaction
many
Alpha k ) found in plants
only
•
Insolvable in water so will not affect water potential
Coiled Icom pact amount can be stored in small
so
large area
•
Large molecule so it can not leave the cell
•
.
Two ( branched ) ( un )
types
:
Amylopectin 31
Amylose branched
°
-
Amylose :
°
polymer of Alpha Glucose .
I
( 1,4 bond ) " "
Glycosidic
II
°
Un branched helix ( held >
Yod's.ge.nu?onds=compaa.ta9neihee:sbg
° -
o .
( 1,4 )
Amylopectin :
O
" "
o
polymer
Branched
of Alpha glucose
20
.
Ho
> Of o
( 1,6 ,
every glucose
o
:
.
molecules .
' "
Branch is corrected by >
o
glycosidic bonds .
, o µ
o
Has ( 1,4 ) and ( 1,6 ) bonds
( 1,4 )
.
Hydrolysis is controlled
by enzymes .
Glycogen :
Alpha Glucose ploy met that stores
energy
in Animals .
Much branched than
amylopectin
°
more .
More free ends release
to
glucose
°
Animals require because
more
energy they
•
move more .
( 1,4 ) ( 1,61
contains and
glycosidic bonds
°
.
" "
"
:c
..
:c
..
:c
. o
.. . o
. o
' " "
" " "
o o o .
( 1,4 ) ( 1,4 ) ( 1,4 )
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