Multiple Choice
Why is the hydrolysis of GTP by a G-protein essentially irreversible?
A) GDP immediately hydrolyzes to GMP and Pi
B) GDP is metabolized to cGMP
C) GDP remains bound after Pi is liberated
D) GTP cannot be synthesized from GDP
E) The Km for Pi is too low
Correct Answer:

Verified
Correct Answer:
Verified
Q12: Diacylglycerol is a(n)_ that promotes _.<br>A) insulin
Q13: Inositol 1,4,5-trisphosphate<br>A) binds to a specific site
Q14: What happens when SMADs dimerize?<br>A) A protein
Q15: What is the term used to indicate
Q16: In skeletal muscle cells _ is responsible
Q18: Formation of a GDP-gamma alpha subunit complex
Q19: Adenylyl cyclase<br>A) catalyzes the ADP ribosylation of
Q20: What is required for STAT (signal transducers
Q21: What is an example of a lipid
Q22: During signal transduction that involves heterotrimeric G