Multiple Choice
Which one of the following is the first step in the sequence of actions in the G-protein receptor activity cycle?
A) α chain activates a target protein.
B) Neurotransmitter binds with receptor.
C) Membrane channels open,or intracellular target proteins are activated.
D) Receptor protein changes shape.
Correct Answer:

Verified
Correct Answer:
Verified
Q8: An antagonist drug acts by:<br>A)Preventing the release
Q9: Which of the following neurotransmitters is paired
Q10: Which of the following neurotransmitters and modulators
Q11: When an action potential arrives at the
Q12: The second messenger in a second messenger
Q14: The binding of ACh at the neuromuscular
Q15: Receptor tyrosine kinases:<br>A)Act through second messenger systems.<br>B)Are
Q16: Receptor activity is regulated by:<br>A)Decreasing the number
Q17: Myasthenia gravis:<br>A)Is caused by the destruction of
Q18: Which of the following is associated with