Cours 2 Flashcards

1
Q

Quels sont les 3 modeles de replication ? (+def)

A
  • Conservatif = double helice identique chaque gen
  • Semi conservatif = replication des brins (1 copie)
  • Dispersif = bouts ADN synth + mixé
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2
Q

Quelle est la molecule capable de se multiplier ?

A
  • ADN
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3
Q

Quelle experience confirme le bon modele de replication ?

A
  • Modele semi conservatif
  • Meselson et Stahl : ADN azote lourd et Adn azote leger
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4
Q

Structure ADN des procaryotes ?

A
  • ADN circulaire
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5
Q

Phases de reproduction d’une cellule ?

A
  • G1 = croissance et preparation duplication
  • S = duplication
  • G2 = croissance et preparation de mitose
  • M = division cell
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6
Q

Oeil de replication + fourche replication def

A
  • Segment ADN sur lequel base pas reliées = trou
  • Deux endroits où s’ouvrent les yeux de replication
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7
Q

Cb de tmps une cell peut repliquer son genome ?

A
  • 8h
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8
Q

La replication est dite bi…

A
  • Directionnelle
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9
Q

ADN pol def

A
  • Enzyme qui intervient dans le processus de replication de l’ADN (3 different)
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10
Q

En quoi consiste l’elongation ?

A
  • formation liaison phosphodiester
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11
Q

Pyrophosphate, c’est quoi ?

A
  • Deux phosphates restant apres rupture du triphosphate
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