Figure 14-26
Use the figure above (Figure 14-26)to answer the corresponding questions.

-Which number in the figure represents activation of the cyclic AMP (cAMP)second-messenger pathway within the cell?

Question

Figure 14-26
Use the figure above (Figure 14-26)to answer the corresponding questions.​
 
-Which number in the figure represents activation of the cyclic AMP (cAMP)second-messenger pathway within the cell?​

Quizplus · Accepted Answer

Number 2 represents the G protein-coupled receptor (GPCR) which, upon activation by a ligand, activates the alpha subunit of the G protein (represented by 1) which in turn activates the enzyme adenylate cyclase (represented by 3) to produce cAMP (represented by 4). Therefore, the activation of cAMP second-messenger pathway is initiated by the activation of the GPCR represented by number 2.

Figure 14-26 Use the Figure Above (Figure 14-26)to Answer the Corresponding Questions.​

Figure 14-26 Use the Figure Above (Figure 14-26)to Answer the Corresponding Questions.