Glucides Flashcards

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1
Q

3 types de glucides

A

MONOsaccharides(sucre SIMPLE)

DIsaccharides(sucre DOUBLE)

POLYsaccharaides(sucre COMPLEXE)

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2
Q

Structure dun monosaccharide

A

MONOMERE

3à7 atlmes de C

3: trioses( GLYCERALDHÉHYDE)
5: pentoses(RIBOSE)
6: hexoses(GLUCOSE,FRUCTOSE,GALACTOSE)

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3
Q

Glucose+glucose

A

Maltose(biere)

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4
Q

Glucose+fructose

A

Saccharose( sucre granulé)

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5
Q

Glucose+galactose

A

Lactose( lait)

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6
Q

Pour etre utilisé par lorganisme, le disaccharide dout etre decomposé(digestion) par quelle reaction

A

HYDROLYSE

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7
Q

2 monosaccharides sunissent pour formee un disaccharide, reaction?

A

De CONDENSATION

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8
Q

LIAISON entre 2 MONOsaccharides

A

Liaison GLYCOSIDIQUE

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9
Q

Polysaccharide est formé de quoi

A

Plusieurs MONOSACCHARIDES

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10
Q

Réserve denergie chez les polysaccharides

A

AMIDON(vegetaux): polymere de GLUCOSE

GLYCOGENE(animaux): polymere de GLUCOSE
Animaux peuvent hydrolyser les polysaccharides afin de liverer du GLUCOSE

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11
Q

Cellulose

A

Polysaccharide STRUCTURAUX

Polymere formé de GLUCOSES

forme FIBRES SOLIDES-> RIGIDITÉ aux PLANTES

AUCUNE valeur NUTRITIVE pour les humains(degrade pas le glucose)

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12
Q

Chitine

A

Polysaccharide STRUCTURAUX

EXOSQUELLETTE insectes

PAROIE CELLULAIRE mycetes

Formé de GLUCOSE chaine contenant l’AZOTE

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13
Q

Les éléments dans les glucides

A

CHO

rapport H:O- 2:1

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