Ciclo celular Flashcards

1
Q

Razón por la que las células embrionarias se dividen rápido

A

G1 y G2 MUY CORTAS

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2
Q

Duración fase M en mamíferos

A

1 hr

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3
Q

Ciclo celular: hígado, páncreas, espermatogonias, epitelio intestinal

A

hígado: 1 año
páncreas: 50 días
espermatogonias: 25 días
epitelio intestinal: 2-5 días

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4
Q

Células lábiles (def & ejemplos)

A

alta actividad mitótica
tejidos constante renovación
(ej: epitelio intestinal, precursores hematopoiesis, espermatogonias)

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5
Q

Células estables/quiescentes

A

Se dividen tras un estímulo
Ej: hepatocitos

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6
Q

Células permanentes

A

G0 permanentemente
Ej: eritrocitos, neuronas

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7
Q

Fase de descompactación

A

G1

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8
Q

Fase de duplicación

A

S (síntesis)

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9
Q

Cohesinas

A

Proteínas que unen las cromátidas hermanas

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10
Q

Fase que verifica el ADN por errores

A

G2

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11
Q

Punto de unión de los microtúbulos al huso mitótico

A

Cinetocoro

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12
Q

Proteínas sensores de daño en checkpoints

A

ATR- Daños por UV
ATM- Daños en 2 cadenas ADN

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13
Q
A
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