TLS Online TPP Program

#Question id: 1127


Which of the following steps does not occur after acetylcholine binds to the muscarinic acetylcholine receptor in heart muscle cells?

#SCPH28 | Zoology
  1. dissociation of Giα subunit from the Gβγ complex

  2. binding of the released Giα subunit to K+ channels

  3. hydrolysis of GTP to GDP by Giα                       

  4. opening of K+ channels