polimerasas y rna repaso Flashcards

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1
Q

rna polimerasas

A

** rna polimerasa:**
Sintetiza cadenas de RNA
3 tipos distintos en eucariontes
RNA polimerasa 2: transcribe mRNA en proteínas

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2
Q
A
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3
Q

dna polimerasa

A

** DNA polimerasa** :
- alfa: eucariotes
Primasa: pone cebador → dentro de la polimeras alfa
Polimerasa: pone nt

DNA polimerasa 3: procariotes → equivalente a la alfa
Sintetiza solo de 5a 3

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4
Q

tipos de polimerasa

A

Polimerasa 1: transcribe genes de RNAr
Polimerasa 2: es la que transcribe genes a proteínas→ traducción
Transcriben en corriente arriba (por delante del gen inicial)
Polimerasa 3: Transcribe corriente arriba o abajo (por detrás del gen inicial)

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5
Q

accion de polimerasas

A

añadir nucleotidos a partir de oh libre

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6
Q

tipos de rna

A
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