1. Qu'est-ce que la membrane cellulaire ?
2. Quelle structure compose principalement la membrane plasmique des cellules ?
3. Quel est le rôle principal de la régulation enzymatique dans la cellule ?
Membrane plasmique — rôle ?
Barrière sélective délimitant la cellule
Membrane plasmique — fonction?
Barrière semi-perméable, délimite la cellule.
Transport passif — mécanisme ?
Sans énergie, selon le gradient de concentration
Bicouche phospholipidique — structure?
Têtes hydrophiles face extérieur, queues hydrophobes intérieur.
Vitesse initiale enzymatique — symbole ?
V₀
Transport passif — nécessite énergie?
Non, selon gradient de concentration.
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