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Bioquimica > Nucleotidos > Flashcards

Nucleotidos Flashcards

1
Q

Funciones

A

Señales químicas
Metabolismo
Terapia cancer

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2
Q

Estructura del nucleotido

A

Base ntrogenada
Pentosa
Fosfato

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3
Q

Nucleosido

A

Base nitrogenada
Pentosa

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4
Q

Enlace de los nucleotidos

A

Enlace fosfodiester

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5
Q

Monomero de los nucleotidos

A

Ácidos nucleicos

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6
Q

Tienen 2 anillos

A

Purina

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7
Q

Tienen 1 anillo

A

Pirimidina

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8
Q

Purinas

A

Adenina y Guanina

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9
Q

Pirimidina

A

Citocina
Timina
Uracilo

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10
Q

Como se unen las bases nitrogenadas

A

Por puentes de H

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11
Q

Puentes de H entre Adenina y Citocina

A

3 puentes de H

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12
Q

Puentes de H entre Guanina y Timina

A

2 puentes de H

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13
Q

Cuantos nucleotidos forma en ADN

A

+200 nucleotidos

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14
Q

Niveles de organización

A

ADN
Nucleosoma (se enreda en las histonas)
Cromatina
Cromosoma

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15
Q

Cuantos pares de bases tiene un cromosoma

A

140 M

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16
Q

Heterocromatina

A

ADN condensado
ADN inactiva

17
Q

Eucromatina

A

Abierto, descondensado
ADN activo

18
Q

Cuantos genes hay por cromosoma

A

446-2200 genes por cromosoma

19
Q

Es un segmento de ADN

A

Gen

20
Q

Replicacion conservativa

A

Conserva ADN parental

21
Q

Replicacion semiconservativa

A

Solo se conserva 1 cadena de ADN parental

22
Q

Replicacion dispersativa

A

Se forma de fragmentos de la cadena parental y de la nueva cadena

23
Q

Replicacion / Helicasa

A

Separa las dos cadenas de ADN
Hidrolisis los puentes de H

24
Q

Replicacion/ topoisomerasa

A

Desenrolla la doble hélice

25
Q

ADN polimerasa III

A

Forma la nueva cadena de 5’ a 3’

26
Q

Transcripción

A

De ADN a ARN

27
Q

Dónde se une ma ARN polimerasa

A

En la zona del promotor

28
Q

ARN m

A

Codifica el ADN
info

29
Q

ARN t

A

Transporta aa
(Anticodones)

30
Q

ARN r

A

Ribosomas

31
Q

Cuantas bases nitrogenadas tiene un codon

A

3

Bioquimica (10 decks)

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