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UE1 Biochimie > Oses > Flashcards

Oses Flashcards

1
Q

epimere

A

diff que par un C asymetrique (D gluc et D galactose)

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2
Q

stereoiso

A

m formule brute ms confi carbones diff

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3
Q

enantiomere

A

image miroir (D glucose et L glucose)

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4
Q

nomenclature ribose

A

aldopentose

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5
Q

nomenclature fructose

A

cetohexose

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6
Q

cycle glucose

A

pyranique

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7
Q

cycle fructose

A

furanique (FF)

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8
Q

oses du maltose

A

gluco gluco

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9
Q

liaison saccharose

A

a1b2

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10
Q

liaisons glycogene et amidon

A

a1-4 chaine principale

a1-6 ramifications

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11
Q

liaison cellulose

A

b1-4

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12
Q

enzyme degradant glyco et amidon

A
  1. a amylases : a1-4 glucosidases
  2. enz debranchant : a1-6 glucos
  3. maltase : a1-4 gluco
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13
Q

Serie D ou L

A

place OH du dernier C asym

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14
Q

Formule glucose

A

C=O debut
CH2OH fin
3e C donne H
2,3,5 asym

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15
Q

Formule fructose D (place du dernier OH)

A

Ch2OH debut et fin
C2 C=O
C3 H
C3,4,5 asym

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16
Q

Pvr réducteur des oses

A

C=O carbonyle

17
Q

Phenomene Oses en solution

A

Cyclisent

Ajout d’un C asym anomere alpha OH anomere beta H

18
Q

Specifi galactose

A

Épimete et stereo du glucose

19
Q

Carbone reduc du glucose et fructose

A

Gluco C1

Fruc C2

20
Q

Osidases sont elles speci de la forme anomerique des oses engages ds liaison osidique ?

A

Oui osidases speci a forme anomerqie

21
Q

comment glycemie mesuree

A

oxy du glucose en gluconate, qui se cyclise en glucolactone

22
Q

oses du lactose

A

GG

gluc galac

23
Q

oses sacc

A

GF

24
Q

osidases du lactose

A

b1-4

25
Q

oses amidon, glycogene

A

glucose a1-4 (princp),a1-6 ramif

26
Q

oses de cellulose

A

glucose b1-4

27
Q

forme cellulose

A

fibres

etiree

28
Q

Lactose

A

GGlucoseAlact

Rainbowcandy

29
Q

Galactose stereoiso de de qui

A

Glucose et même epimete

30
Q

Principale source de glucides alimentaires

A

Amidon

UE1 Biochimie (7 decks)

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