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Biologia molecular > I Biomol > Flashcards

I Biomol Flashcards

1
Q

Funcion del ARN mensajero

A

copia gen y lo trasporta al ribosma

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2
Q

El ARNm tiene…

A

codon y caperuza

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3
Q

ARN que no produce proteinas

A

ARN ribosomal

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4
Q

Funcion de ARNt

A

transporte y union de aminoacidos hacia ARNm

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5
Q

Que contiene ARNt

A

anticodon y aminoacidos

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6
Q

cuales enunciados forman parte de la expresion de genes

A

traduccion
transcrpcion
porceso postranscrpcional

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7
Q

No expresa genes

A

replicacion

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8
Q

se crean RNAm al mismo tiempo

A

verdadero

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9
Q

parejas de los sitios de traduccion

A

A-sitio de entrada de aminoacil RNAt
P-peptidil RNAt
E-exit salida de peptidil RNAt

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10
Q

funcion del RNAr

A

formacion de ribosomas

no forma proteinas

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11
Q

enlace petosa+BN

A

n-glucosidico=enlaces covalentes

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12
Q

enlace BN*pentosa+fosfato

A

ester

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13
Q

nucleotido+nucelotido

A

fosfodiester

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14
Q

bases nitrigenadas

A

Puente de hidrogeno

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15
Q

orden de compactacion del ADN

A 
histonas 
nucleosoma 
centrosoma
30nm
300nm
700nm
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16
Q

composicion ribosomal

A

Subunidad 60S y 40S

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17
Q

La replicacion es…

A

bidericcional

semiconservadora

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18
Q

la sintesis del DNA es

A

bidereccional

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19
Q

la helicasa

A

rompe puentes de hidrogeno (bases-bases)

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20
Q

la topoisomerasa

A

corta y pega para liberar la tencion

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21
Q

La proteinas de union a cadena sencilla

A

evitan formacion de puentes de hidrogeno

22
Q

DNA POL ALPHA

A

primasa

23
Q

DNA POL DELTA

A

elongacion rezagada

24
Q

DNA POL EPSILON

A

elongacion lider

25
Q

DNA POL BETA

A

reparacion de erorres

26
Q

DNA POL GAMA

A

replicacion de DNA mitocondrial

27
Q

enzima que une ragmentos de okazaki

A

ligasa

28
Q

codones de paro

A

UAG UAA UGA

29
Q

Codon de inicio

A

AUG

30
Q

RNA POL 1

A

nucleo
transcrito de 45S
precursor RNAr (18s, 28s y 5.8s)
TF1

31
Q

RNA POL 2

A

nucleoplasma
sintesitiza RNAm y RNAmi
TF2

32
Q

RNA POL 3

A

Nuceloplasma
sintetiza RNAt y RNAr 5s
TF3

33
Q

Enzima que sintetiza aminocial RNAt

A

aminoacil RNAt sintetasa

34
Q

iniciador del proceso de transcrpicion

A

caja TATA

rico en timina y adenina

35
Q

secuencias regulatorias

A

promoteres
potenciadores
silencidores

36
Q

secuencias codificantes

A

intrones: no codifican
extrones: codifican

37
Q

TFIID

A

Une la caja TATA al sito de union especifico TBP

38
Q

TFIIA

A

estabilia la union TBP-TATA

39
Q

TFIIB

A

Da instrucciones a la ARN pol II

40
Q

TFIIF

A

Pegamento de ARNpoll

41
Q

TFIIE

A

regula TFIIH

42
Q

TFIIH

A

fosforila ARN pol

43
Q

ley de chargaf

A 
A = U-T
C = G
44
Q

subunidad menor compuesta

A

18S + 33 proteinas

45
Q

subuniad mayor compuesta

A

5s, 5.8s y 28s

46
Q

Transpcriptasa reversa que sintetiza una secuencia determinada de DNA

A

topoisomeras

47
Q

El factor IF4 identifica

A

caperuza

48
Q

que remueve escision de bases

A

1 sola base

49
Q

Esicion de nucleotidos remueve

A

+20 nucleotidos

50
Q

extremos 5´ en el ciclo de repliacion

A

se acortan

51
Q

desoxiadenosina
desoxitimina
desoxicitosina
desoxiguanina

A

nucleotidos

Biologia molecular (1 decks)

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