Which of the following is NOT part of a liver cell's response to epinephrine? Phosphorylation of phosphorylase kinase activation of Protein kinase A GDP phosphorylation by G-alpha production of cAMP

Which is a correct explanation of an aspect within G protein signaling pathway? ATP powers the G protein to cause it to move and activate an enzyme O GTP activates the G protein causing it to move to activate the next protein O The receptor is active when bound to GTP GTP causes the G protein to activate and bind to the receptor

There is a membrane receptor that exerts its effect through increased cAMP synthesis via an activated G protein.  A mutant cell line is found to contain an altered form of this receptor that is constantly activated.  What specific word describes such an enzyme and explain what effect(s) it has on cellular cAMP levels?

1. Please explain the picture using the following terms: Receptor, (G protein or ligand-gated ion channel) Protein kinases and phosphorylation Secondary messengers  Response (DNA to protein = expression of a protein/trait/action by a cell)

Which of the following statements about the role of ATP in cell signalling is correct? Choose only the best answer. All of the other options are correct. ATP functions as a secondary messenger. ATP is involved in the activation of G protein-coupled receptors. ATP is involved in the activation of some proteins that serve as relay molecules.

What protein is activated in the cytoplasm due to activation of the insulin receptor? protein kinase A glycogen phosphorylase protein phosphatase 1 glycogen synthase kinase insulin-receptor substrate

1) the Ga subunit has a mutation resulting in increased GTPase activity? Why is the GPCR referred to as a GEF? What would occur in G protein signalling if

Which processes are involved in the signaling pathway from insulin to glycogen synthase kinase 3 (GSK3) inactivation (select all that apply)? O protein kinase B being activated by a protein kinase known as PDK-1 O activation of insulin receptor substrate-1 (IRS-1) by phosphorylation O phosphatidylinositol 3-kinase associating with IRS-1 generates phosphatidylinositol 4,5-bisphosphate O protein kinase B phosphorylating GSK3, resulting in its activation O insulin binding to a tyrosine kinase receptor

Choose the item in column 2 that best matches each item in column 1.                                                                                                                               necessary for the activation of heterotrimeric G-proteins                                                                                                                               primary signal that activates platelets                                                                                                                               pertussis toxin                                                                                                                               adenylate cyclase                                                                                                                               hormones acting over long distances…

Mutations in which of the following would MOST DIRECTLY affect the cAMP signaling pathway?   Adenylyl cyclase PKA IP3 Ligand-gated ion channel