Núcleo Flashcards by Camila Vargas | Brainscape

Q

delimitado por envoltura nuclear

tiene ADN

1 o más nucleolos

nucleosoma

A

Núcleo

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Q

la envoltura nuclear tiene

A

es bicapa lipídica
tiene poros nucleares

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Q

complejo de poro nuclear formado por

A

nucleoporinas

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Q

impiden paso de mactomoléculas en poros nucleares

A

dominios fenialanina-glicina

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Q

el poro nuclear tiene

A

anillos citoplasmáticos y canasta nuclear

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Q

hacen ensámblame y maduración de ribosomas

son factores de transcripción y replicación

A

importinas

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Q

son subunidades ribosomales

ARNm y ARNt

A

exportinas

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Q

poseen señales de importación y exportación nuclear

A

virus

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Q

mutación en gen LMNA que da lugar a proteína de la lámina nuclear A (progerina)

A

progeria

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Q

cromatina ligeramente compactada que está activa

A

eucromatina

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Q

cromatina condensada en forma inactiva

A

heterocromatina

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Q

unidad básica de organización de cromosomas

A

nucleosomas

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Q

núcleo + ADN espaciador

A

nucleosoma

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Q

histonas que forman 4 dímeros

A

(2) H3-H4
(2) H2A-H2B

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Q

activación de transcripción

A

acetilación de lisinas

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Q

metilación de H3K9

A

represión de transcripción

Q

metilación de H3K4

A

activación de transcripción

Q

donde ocurre el paso de ADN a ARN y viceversa

A

dogma central del núcleo

Q

fábrica de ribosomas

A

nucleolo

Q

en la terapia génica se usa el

A

CRISPR CAS