Which of the following order of events is most accurate for activation of G-protein coupled receptor (GPCR) signaling pathways?

A. Hormone binds GPCR, GPCR binds with G protein, G protein loses GDP and gains GTP, G-protein alpha subunit activates intracellular proteins.
B. Hormone binds GPCR, G protein loses GDP and gains GTP, GPCR binds with G protein, G-protein alpha subunit activates intracellular proteins.
C. Hormone binds GPCR, GPCR binds with G protein, G-protein alpha subunit activates intracellular proteins, G protein loses GDP and gains GTP.
D. Hormone binds GPCR, G protein loses GDP and gains GTP, G-protein alpha subunit activates intracellular proteins, GPCR binds with G protein.
E. GPCR binds with G protein, hormone binds GPCR, G protein loses GDP and gains GTP, G-protein alpha subunit activates intracellular proteins.


A. Hormone binds GPCR, GPCR binds with G protein, G protein loses GDP and gains GTP, G-protein alpha subunit activates intracellular proteins.

Biology & Microbiology

You might also like to view...

Genetic counselors are typically medical doctors who specialize in treating infertile couples

a. True b. False Indicate whether the statement is true or false

Biology & Microbiology

If you were diagnosing a case of infertility in a male patient, and you found that his sperm failed to swim as a result of inactivation, you would diagnose a problem in the

A. bulbourethral gland. B. seminal vesicle. C. prostate gland. D. vas deferens. E. epididymis.

Biology & Microbiology

During the process of gel electrophoresis, the DNA fragments migrate due to the effects of ____

a. gravity b. vibrations

c. electrical charge d. magnetic attraction e. centrifugal force

Biology & Microbiology

The evolution of which trait allowed plants to grow taller?

A) seeds B) vascular tissue C) flowers D) photosynthesis

Biology & Microbiology