ribosomas Flashcards

1
Q

estructura ribosomes

A

conjunto de proteinas con rna´s ribosomicos se encuentran libres en el citoplasma o anclados al re

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2
Q

ribosomes eucariota completo

A

80S
subunidad mayor de 60s
3 tipos de arn (5s, 28s y 5.8s) y 40 proteinas
subunidad menor de 40s
1 moleucla de arn de 18s y 33 proteinas

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3
Q

ribosoma procariota completo

A

70s
subunidad mayor de 50s
2 tipos de arn (5s, 23s) y 34 proteinas
subunidad menor de 30s
16s arn y 21 proteinas

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4
Q

función de los ribosomes

A

traduccion
decodificacion de rna a proteinas

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5
Q

biogénesis del ribosoma

A

se forma en el núcleo

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6
Q

pre-rna de 45s

A

los rna´s de 28s, 5.8s y 18s vienen de un mismo gen
se corta en tres pedazos

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7
Q

quienes ayudan al corte

A

snoRNA’s

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8
Q

los rRNA de 5s donde se sintetizan

A

apartir de otro gen fuera del nucleolo

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9
Q

copias de tándem

A

múltiples gen

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10
Q

pre-rna de 45s es empaquetado en una particular…

A

ribonucleoproteica

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11
Q

subunidad pequeña y subunidad larga inmadura se transportan a traves de…

A

los poros nucleares y finalmente en el citoplasma

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