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Biology A Level > CARBOHYDRATES > Flashcards

CARBOHYDRATES Flashcards

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1
Q

carbohydrates

A

contain h, o, c
in every carbon, there are 2H, and 1 O.
it is a source and store of energy,
it is a structure unit.

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2
Q

monosaacharide

A

source of energy
soluble.

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3
Q

disaacharide

A

soluble
maltose
sucrose-non reducing
lactose

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4
Q

maltose

A

alpha+alpha

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5
Q

surcose

A

alpha+furcose

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6
Q

lactose

A

b glactose+alpha

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7
Q

celobose

A

beta+beta

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8
Q

how do these join

A

join by condensation reaction, which forms a glycosidic bonds

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9
Q

glycodsic bonds

A

joins carbohydrates and forms glycosidic bond

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10
Q

disaacharides broken to

A

monosaccharides, by a hydrolysis reaction.

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11
Q

alpha glucose

A

energy source
component of starch, and glycogen

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12
Q

beta glucose

A

energy source
component of celluose

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13
Q

ribose

A

component of RNA, ATP and NAD.

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14
Q

deoyribose

A

component of DNA

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15
Q

polysaacharides

A

polymers of monosaccharides.
join a lot to form store of energy.
plants=starch
humans-glycogen

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16
Q

glycogen

A

compact, so dosent take space.
branced-easily snipped by hydrolysis.
1-4 bonded chains, less tendency to coil.

17
Q

starch

A

amylose or amlypepticin

18
Q

amylose

A

compact
unbtranched
coils to spiral shape.
h2 bonding
hydroxyl groups insided making it less soluble.

19
Q

amylopepticin

A

1-6 glycosidic bonds.
also coils, h2 bonding
branches
not soluble

20
Q

celluose

A

found in plants (cell wall).
tough
insoluble
bonded thrugh condesation to make glycodsic bonds.
dosent spiral like alpha, straight lie by side.
h2 bonding make it stronger.

21
Q

why dosent celluose spira;

A

o, oh inverted in beta.

22
Q

microfibrils

A

lots of chains bounded

23
Q

bundle of microfibrils

A

cell wall

24
Q

structure and function of plant cell walls

A

micro/microfibrils have high tensile strength-prevents from bursting
macro-run in all directions.
space in macro to allow h20 and mineral ions to move. PERMEABLE

Biology A Level (9 decks)

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