Arrange the following steps in the pathway activated by G protein-coupled receptors. Write the letter
of the first step next to 1 and the letter of the last step next to 5.
A. Activation of effector
B. Activation of protein kinases
C. Receptor binds first messenger
D. Production of second messenger
E. Activation of G protein
1.
2.
3.
4.
5.
ANS:1.
C
2. E
3. A
4. D
5. B
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