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WJEC Biology - Unit 1
Biological molecules
Carbohydrates
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Libby Davies
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Cards (17)
The basic monomer of a carbohydrate is a ...
saccharide
Monosaccharides are sweet tasting and have the general formula ...
(
CH2O
)
n
The atoms in glucose form a ...
ring
structure
In alpha glucose the OH is
below
carbon 1, in beta glucose the OH is
above
carbon 1.
What is the name of the bond formed between two glucose molecules?
glycosidic
bond
How is a glycosidic bond formed?
condensation
reaction
How is a glycosidic bond broken?
Hydrolysis
What is formed when many glucose molecules joined together?
polysaccharide
What contains a mixture of amylose and amylopectin?
starch
Amylose is a ...
Unbranched
polymer
It is formed of
a-glucose
molecules linked by
1-4
glycosidic bonds
Amylopectin is a ...
Branched
polymer
Formed of
a-glucose
and
1-6
glycosidic bonds
What is the main storage product in animals?
glycogen
Glycogen is a ...
Highly
branched
polymer
Formed of
a-glucose
and
1-4
and
1-6
glycosidic bonds
What is the main constituent of plant cell walls?
Cellulose
Cellulose is a ...
unbranched
polymer
Made of
B-glucose
molecules linked by
1-4
glycosidic bonds
Forms
B-sheets
of parallel strands held together by
hydrogen
bonding
, which then form
microfibrils
Each glucose molecule is rotated by
180
degrees
What is the main component of insects exoskeletons?
Chitin
Chitin is a ...
unbranched
polymer
Formed of long chains of
B-glucose
joined by
1-4
glycosidic bonds
It has
amino
acids
added to form a
mucopolysaccharide