A cell is stimulated simultaneously by a GPCR activating the IP3/DAG pathway and a ligand activating an RTK. Which cellular outcome is most likely due to signal cross-talk?

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Biology · Cell Signaling

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Increased Ca2+ release from the ER enhances PKC activation initiated by RTK signaling

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Answer 1

DAG production prevents Ras activation downstream of the RTK

Answer 2

cAMP completely inhibits all RTK-mediated intracellular pathways

Answer 3

IP3 directly phosphorylates RTKs to amplify downstream signaling

Answer 4

Increased Ca2+ release from the ER enhances PKC activation initiated by RTK signaling

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