Comunicación celular Flashcards

1
Q

Tipos de comunicacion celular

A

Directos y indirectos

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2
Q

Tipos de comunucacion cel. directa

A

Ligados asociados a membrana

Yuxtacrina

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3
Q

Tipos de comunicacion cel. indirecta

A
Sinapsis quimica
Gap
Paracrino
Autocrino 
Endocrino
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4
Q

Tipos de receptores

A

Ligados a canales ionicos
Canales a enzimas
Acoplados a proteinas

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5
Q

La union de la molecula se une a su receptor. Apertura transitoria

A

Ligados a canales ionicos

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6
Q

Proteina integral, por activacion por enzimas

A

Canales de enzimas

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7
Q
Se compone de 7 dominios transmembrana. Funcionamiento a traves de un intermediario. 
3 subunidades (alfa, beta y gama)
A

Acoplados a proteina G

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8
Q

Gs

A

Activa a adenilato ciclasa, +AMPc

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9
Q

Gi

A

Inhibe adenilato ciclasa. -AMPc

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10
Q

Gq

A

Activa fosfolipasa C

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11
Q

Funcionamiento del segundo mensajero

A

Amplifiacion de la señal recibida
Rapida interaccion ligando receptor
Destruccion o inactivacion veloz

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12
Q

Pasos del AMPc

A
1- GPCR activado
2- subunidad alfa estimula Gs
3- Ampc ATP
4- PKA
5- CREB
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13
Q
1- Activacion de fosfoipasa C 
2- Activacion de PI 4,5-bifosfato
(liberacion. de Ca)
3- IP 1,4, 5 trifosfato y diacilgricerol 
4- PKC
A

Ionositol trifosfato (IP3) via de señalizacion

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14
Q

Metabolismo

A

Glucolisis
Respiracion celular
Fermentacion

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15
Q

Glucolisis

A

Citosol
Glucosa 6 C= 2 mol de piruvato
Se invierten 2 ATP= Se generan 4 ATP

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16
Q

Respiracion celular

A

Ambiente aerobio 02
O2 + Piruvato= CO2
liberacion energia almacenada en enlaces de piruvato

17
Q

Fermentacion

A

Anaerobio

(CO2) cancelado= acido lactico o etanol