Arrange the Events in the Pathway Activated by G-Protein-Coupled Receptors

question 15

Multiple Choice

Arrange the events in the pathway activated by G-protein-coupled receptors (GPCRs) in the correct order.
1.  Activation of effector
2.  Activation of protein kinases
3.  Receptor binds first messenger
4.  Production of second messenger
5.  Activation of G protein

• A)1→3→5→2→4
• B)2→3→5→4→1
• C)3→1→5→4→2
• D)3→5→1→4→2
• E)3→5→2→4→1

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