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4to parcial Biología Molecular > Organización del ADN en células eucariotas > Flashcards

Organización del ADN en células eucariotas Flashcards

1
Q

1er NIVEL: Cromatina

A
  • ADN + proteinas
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2
Q

Tipos de cromatina:

A

Eurocromatina y heterocromatina

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3
Q

Eurocromatina

A

Cromatina “relajada” que es TRANSCRIPCIONALMENTE ACTIVA

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4
Q

Heterocromatina

A

Cromatina “condensada” que es TRANSCRIPCIONALMENTE INACTIVA

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5
Q

2ndo NIVEL: Nucleosoma

A
  • Son ADN asociado con un octamero de HISTONAS
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6
Q

Las HISTONAS son proteinas básicas ricas en:

A

LISINA y ARGININA

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7
Q

Existen 5 tipos de histonas

A

H1: Es la que conecta a los nucleosoma
H2A, H2B, H3, H4: Forman parte del nucleosoma

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8
Q

3er NIVEL: Nucleofilamento

A

Se forma cuando se condensan muchos nucleosomas

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9
Q

4to NIVEL: Fibra de 30 nm

A

Se forma cuando se condensan muchos nucleofilamentos

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10
Q
A
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4to parcial Biología Molecular (10 decks)

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