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biochmie > cycle kreps2 > Flashcards

cycle kreps2 Flashcards

1
Q

acetyl coa + oxaloacetat =

A

citrate

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2
Q

enzyme de cette reaction

A

citrate synthese

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3
Q

co enzyme

A

h2o + coa sh

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4
Q

reaction reversible OU irreversible

A

irreversible

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5
Q

citrate —- va etre

A

6 aconitate

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6
Q

enzyme

A

aconitase

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7
Q

les produits

A

h2o

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8
Q

6aconitate va etre

A

isocitrat

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9
Q

faut ajouter

A

h2o

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10
Q

la reaction est

A

réversible

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11
Q

isocetrate va etre

A

alpha cetoglutarate +co2

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12
Q

enzyme

A

isocetrate desydrogenase

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13
Q

coenzyme

A

nadp+ —— nadph h+

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14
Q

reaction revesible/irreversible

A

irréversible

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15
Q

alpha cetoglutarate va etre

A

succynil coa +co2

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16
Q

enzyme

A

alpha ceto gultarate deshydrogenase

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17
Q

coenzyme

A

coa sh

nad+— nadh.h+

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18
Q

la réction irrversible ou reversible

A

irreversible

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19
Q

succinyl coa ymdlna

A

succynil phosphate

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20
Q

enzyme

A

succinyll coa synthese

21
Q

coenzyme

A

pi + s-coa

22
Q

succinyl phosphate ymdly

A

succinate

23
Q

coenzyme

A

gdp twly gtp

24
Q

reaction irre ou reve

A

réversible

25
Q

succinate ymdly

A

fumarate

26
Q

enzyme

A

succinate desydrogenase

27
Q

coenzyme

A

FAD+—FADH2

28
Q

reacton irr/rev

A

irre

29
Q

fumarate ywli

A

malate

30
Q

ns79o

A

h2o

31
Q

enzyme

A

fumarase

32
Q

reaction revesible/ irre

A

réversible

33
Q

malate ywli

A

oxaloacetate

34
Q

enzyme

A

malate desydrogenase

35
Q

coenzyme

A

nad+ -nadh h+

36
Q

réaction reve/irver

A

réversible

37
Q

quelles sont les sites de regulation dans cycle de kreps

A
  • citrate synthetase
  • isocitrate desydrogenase
  • alpha ceto glutarate désydrogenase
38
Q

cirate synthetase inhibé par

A

atp citrate succinyl coa nadh.h+

39
Q

isocitrate desydrogenase stimulé par

A

adp

40
Q

alpha ceto glutarate désydrogénase inhibé par

A

succinyl coa nadh.h+

41
Q

billan énergetique de cycle de kreps

A 
acetyle  coa
3NAD+
FAD 
GDP 
PI
2H2O 
les produits:
2CO2 +3NADH.H+ +FADH2 +GTP +COA
42
Q

TRANSFORMATION DE L’energie du nadh’h+ fadh2 en atp realisé dans

A

la chaine respiratoire de la mitchondrie

43
Q

par un processus aplé

A

phosphorélation oxydative

44
Q

1 nadh.h+—-

fadh2—–

A

3atp

2atp

45
Q

oxydation de acétyl coa donne

A

12 atp

46
Q

2 systeme navettes existent

A

navette du glycérole 3 phosphate dans ls muscle et le cerveau
navette malate aspartate le coeur le fois la rien

47
Q

en aerobiose production de

A

38 atp

48
Q

en anaerobiose

A

2 atp

biochmie (7 decks)

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