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1215350
Intracellular signaling
Descripción
Cell biology, second edition, shorter course
Sin etiquetas
cell biology
Test por
Gintarė
, actualizado hace más de 1 año
Más
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Creado por
Gintarė
hace casi 10 años
72
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Resumen del Recurso
Pregunta 1
Pregunta
Which of the following doesn't exist?
Respuesta
Phospholipase C gama
Protein kinase B
Protein kinase A
Phospholipase C alfa
phospoholipase C beta
Pregunta 2
Pregunta
Inositol trisphosphate-gated calcium channels are located in...
Respuesta
regulated exocytotic vesicles
the plasma membrane
the inner mitochondrial membrane
the smooth endoplasmic reticulum
all of the above
Pregunta 3
Pregunta
Which of the following statements is false?
Respuesta
appearance of PIP3 at the plasma membrane can activate a protein kinase
hydrolysis of GTP by Ras can activate a protein kinase
an increase of cytosolic cAMP concentration can activate a protein kinase
dimerization of growth factor receptors can activate a protein kinase
an increase of cytosolic calcium concentratiojn can activate a protein kinase
Pregunta 4
Pregunta
Which of the following is an enzyme, one of whose substrates is a nucleotide triphosphate?
Respuesta
Ras
The PDGF receptor
Protein kinase A
The insulin receptor
All of the above
Pregunta 5
Pregunta
Phosphotidylinositol bisphosphate is used in two different signaling pathways. these convert it, respectively into:
Respuesta
cAMP and c GMP
IP3 and PIP3
PIP2 and c AMP
IP3 and cAMP
PIP2 and PIP3
Pregunta 6
Pregunta
Arrival of a scent chemical at a scent-sensitive nerve cell causes that cell to
Respuesta
generate action poencials
open voltage-gated sodium channels in the plasma membrane
open cAMP-gated channels in the plasma membrane
activae adenylate cyclase
all of these above
Pregunta 7
Pregunta
Depolarization of axon terminals causes calcium ions to flow into the cytosol through
Respuesta
calcium ATPases
voltage - gated calcium channels
cAMP-gated calcium channels
inositol trisphosphate-gated calcium channels
ryanodine receptors
Pregunta 8
Pregunta
Why majority of transmitters are released from cells by exocytosis?
Respuesta
because different set of receptors activates Gs
Tyrosine kinases are Grb2 receptors
Because exocytosis is induced by an increase of cytosolic calcium concentration
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