Tuto 5 Métabolisme Flashcards

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1
Q

Étapes de l’activité enzymatique

A
Liaison pour former le complexe enzyme-substrat (changement de forme)
Action enzymatique (complexe change, produits appairaissent)
Relachement des produits
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2
Q

3 facons de former le l’ATP

A
  • phosphorylation directe
  • glycolyse (anaérobie)
  • respiration cellulaire (aérobie)
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3
Q

Phases de la glycolyse

A

1: Activation du glucosea
2: Scission du glucose
3: Oxydation et formation d’ATP

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4
Q
Calcul d’ATP
Glycolyse
-activation
-scission
-oxydation
Cycle de krebs
Phosphorylation oxydative
A
Glycolyse 2 atp, 2 nadh
-activation -2 atp
-scission 0
-oxydation +4 atp + 2 nadh
Cycle de krebs 2 atp, 8 nadh, 2 fadh2
-phase préparatoire (+nadh) x 2
-cycle (+atp, +3nadh, +fadh2) x 2
Phosphorylation oxydative (nadh= 3 atp) = 30 atp, (fadh2= 2 atp) = 4 atp
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5
Q

Oxydation aa étapes

A

Pré étape: désamination

1: transamination
2: désamination oxydative
3: modification des acides cétoniques

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