Which of the following doesn't exist?
Phospholipase C gama
Protein kinase B
Protein kinase A
Phospholipase C alfa
phospoholipase C beta
Inositol trisphosphate-gated calcium channels are located in...
regulated exocytotic vesicles
the plasma membrane
the inner mitochondrial membrane
the smooth endoplasmic reticulum
all of the above
Which of the following statements is false?
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
Which of the following is an enzyme, one of whose substrates is a nucleotide triphosphate?
Ras
The PDGF receptor
The insulin receptor
All of the above
Phosphotidylinositol bisphosphate is used in two different signaling pathways. these convert it, respectively into:
cAMP and c GMP
IP3 and PIP3
PIP2 and c AMP
IP3 and cAMP
PIP2 and PIP3
Arrival of a scent chemical at a scent-sensitive nerve cell causes that cell to
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
Depolarization of axon terminals causes calcium ions to flow into the cytosol through
calcium ATPases
voltage - gated calcium channels
cAMP-gated calcium channels
inositol trisphosphate-gated calcium channels
ryanodine receptors
Why majority of transmitters are released from cells by exocytosis?
because different set of receptors activates Gs
Tyrosine kinases are Grb2 receptors
Because exocytosis is induced by an increase of cytosolic calcium concentration
