Mitosis Flashcards

1
Q

Interfase

A

Comprende
G1
S
G2

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2
Q

Fase G1

A

Incrementa el material enzimatico y el tamaño de los organelos. Se fisionan las mitocondrias.

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3
Q

Fase G0 (extra)

A

Etapa de reposo (no se divide) pero realiza su función

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4
Q

Fase S

A

Replicacion del DNA (copia)

Se sintetiza lo necesario para hacer la copia (Polimerasa, ligasa y topoisomerasa e histonas)

Se duplican los centrosomas

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5
Q

Fase G2

A

Preparación para la mitosis

Se sintetiza la maquinaria necesaria para ma división

Se condensan cromosomas

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6
Q

Profase mitotica

A

Se rompe la membrana nuclear

Condensan cromosomas (condensina)

Centriolos se van hacia los polos

Se ensambla el huso mitotico

Se fragmenta el RE y el golgi

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7
Q

Metafase

A

Los cromosomas se alinean a la mitad (ecuador)

Los microtubulos se unen a los cromosomas gracias al cinetocoro

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8
Q

Cinetocoros

A

Anclan de 20 a 30 microtubulos

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10
Q

Anafase

A

Se separan los dos cromosomas y se van a polos opuestos

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11
Q

Citocinesis

A

Empieza desde la anafase y termina en anafase

Terminación de la división

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12
Q

cinasas dependientes de ciclinas

A

Fosforilan a las ciclinas

A B D E

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13
Q

Ciclinas

A

Trabajan junto con las cinasas para regular el ciclo celular

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14
Q

Pasar de G1 a S

A

CDK4-ciclina D
CDK6-ciclina D
CDK2-ciclina E

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15
Q

En la Fase S

A

CDK2-ciclinaA

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16
Q

Fase G2

A

CDK1-ciclina B

CDK1-ciclina A

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17
Q

Telofase

A

Se forma de nueva la membrana nuclear

El anillo contractir de actina y miosina separa la celula